Not that you have any problems with your use of English on the whole. I understand your posts without difficulty 
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You should see draft versions of my posts, it's strangely resembles orkish
. (makes me wonder if I'm playing the right army)
Ok, back to the topic. I will go through units and address changes both you and Grand Master Lomandalis propossed.
Eldrad I was looking at Tigurus for reference, he is way cheaper than Eldrad, yet his buffing ability is better, the difference is in Eldrad having better ++ save, being better ML and having the ability to restore warp charge.
Tigurus on the other hand can almost guaranty to get desired power(read as, you can build army around desired power, which is very important), has access to all disciplines including divination, which normal librarians do not get, and has a handy re-roll on psychic test.
Perhaps 15 more for Eldrad is not enough price increase, but I feel 50 pts is way to much.
Yriel Ok, I admit, when I broke him down to basic autarch cost and started strapping on wargear he has, I was kinda generous with cost of his Eye of Wrath. He got nerfed from the last codex, his singing spear not as usefull and his ++ save in cc got worse, and problem is he is a T3 cc model. I am really not sure of him, but with his low cost he would at least intrigue people to take him over regular autarch.
Illic Sorry about that, 10 pts increase was just for shred on his sniper, I forgot to add cost for webway portal, I listed it in new pathfinders entry, I priced it 40 pts for them.
Now, I feel most Phoenix lords are way overpriced,(there is a reason phoenix lords are never taken in competitive lists, hell, none of our special characters are, while other armies (competitive, of course) can be build around their special characters) they should give more for their point cost so I included the ability to make one unit of their aspect scoring in their base price. Simply to make them more attractive. And besides, it's a nice addition at best, not great or game changing, specially since in 6th edition troops are not that important any more.
I haven't thought about how to determine which squad is scoring if multiple squads of the same aspects are present, but a rather simple way comes to my mind, you can simply point it with a finger and say "they count as scoring"
I'll have to think about it a bit more.
Jain Zar Well, she already has that modifiers for WS and I, check her entry, it's not something I made up. Ignoring overwatch is something banshees should do(at least I feel so, others may disagree), no reason not to allow their phoenix lord the same.
And the LD test, you maybe didn't notice I didn't give banshees or her grenades. It basically has the same function as grenades, only it's not certain and doesn't work on all units. (check going to ground in the rulebook, how units that have gone to ground(equivalent of being pinned) behave when assaulted. It's only in assault phase and only if charge was successful, I don't see it as being overpowered. I wanted to give regular banshees 3D6 LD test, so I find it only appropriate to give their phoenix lord 4D6 test.
I mean, how much would you pay for grenades on Jain Zar? Actually a crappy version of grenades because it doesn't work on fearless/bikes/walkers/MCs and other units that can't be pinned.
On acrobatics, I simply don't see it being useful as it is now, and of course, I never thought they should be able to charge out of transport.
Karandras So, you would price his ability to hide in terrain 50 pts? It's really not that good, since he can't charge when he is available, and some players will still want to take him in squad with other units and there is no reason for him to be more expansive for a lone deep striking that can be countered by a proper deployment. Plus, there's a chance he will not be available before turn 4. It's simply a fun rule, not game changing or anything.
Maugan Ra Actually, a price hike was only for his gun, as said earlier, all lords got the ability to make one of their aspects scoring for free.
Warlocks Well, 50 pts, compare it to spirit seer. For 20 pts more you get ability to change FOC with wraithguard, spirit mark, access to telepathy and one wound more. 40-45 top is price range I would go.
Dire avengers True, point taken, (there's of course a paradox of grey hunters costing less than regular marines and having similar ability which makes them way better, but I think that will be changed). I feel they are like general elite infantry and the addition of counter charge rule on them makes me want to push them a bit towards cc.
Guardian defenders I don't think I made myself clear. In 6th edition I mostly used guardians as a poor's man dire avengers(or sometimes in large blobs of 20), in wave serpents as opposed to objective campers they were in 5th. In that role, I'd rather have them with their current shuriken catapults than lasblasters, bladestorm is just too good. With the ability to have lasblasters(watch out, there would be a distinction between guardian lasblaster(assault 2) and swooping hawk lasblaster(assault 3),similar to difference between dire avenger catapult and guardian catapult.) they would become good objective campers, but that's only one way to use them. It gives more options and flexibility.
In short, I wouldn't call lasblasters better than shuriken catapults, simply different, they change battlefield roles.
Storm guardians power weapons in guard codex are for sergeants and commissars, characters with multiple attacks, and they cost 10.
I feel current price on storm guardians is way to high. Not sure of this.
Jetbikes Well, I thought since they don't benefit from battle focus, let's give them something similar.
But on the other hand, it would only make them better, so improving other troop choices in order to make them more attractive is kinda pointless.
You are both right, they should stay as they are.
Rangers and Pathfinders Point of their price decrease is making them more attractive. Simple as that. We all know what our best troops are, if there' s something much cheaper, people might be inclined to take more of it. There is a reason why there are good all jetbike armies and no all ranger/pathfinder armies. Webway portal is also a way to add "sort of" mobility to otherwise static list.
Wave serpent Now, the most ridiculous unit in the codex, to have a troop transport that outclasses every other tank we have except fire prism against AV 14. When I first saw range 60'' on serpent shield, I thought it was a typo and it was supposed to be 6'' I imagined serpent shield as a prior to charge weapon, something that softens enemy unit. There is a mention in IA 11 about serpent shield, how it stuns enemy units while disembarking aspect warriors prepare to assault, and I would like it in that role.
I agree that the rule I added about turning penetrating hits to glancing on 4+ is excessive, I guess I wanted a trade off of some sort because serpent lost his range and firepower, so I wanted to boost his defense a bit.
Oh, and I thought it already is a heavy weapon, doesn't make any difference if it's assault weapon since it's only on a vehicle I guess.
Howling banshees Acrobatics and pinning on banshees was already discussed on Jain Zar. I don't know why you price ignores overwatch so high, there's a cheep vehicle upgrade in chaos armory that does exactly the same on multiple units. And -1WS and -1I is like having a "mini Jain Zar mask", a regular banshee mask. It could be worded like "unit that consists only of howling banshees ignore overwatch" to prevent people from sticking autarch with mask into a unit and charging in.
I admit I went a bit overboard with furious charge.
Striking scorpions Well, I thought it's kinda appropriate to give them better AP than that of storm guardians, but it's not necessary.
Wraithblades In codex as it is, there is no price for replacing wraith swords with axes and shields. I priced both standard wraithguard and wraithblades a bit higher because the ability to mix weapons in the same squad, and added cost replacing weapons. Again, in that configuration they might see more table.
Swooping hawks I'm fine with that, large squads are now more appealing than min 6 man units used for yoyo with grenades.
Shining spears Not useless, they ignore terrain for assault purposes, meaning, no penalty for charging into cover. Or just give them grenades.
Vyper And I thought I was so inventive when I thought of the concept of a 2 wound jet bike, hahaha. The problem with vyper is he is outclassed by other fast attack choices we have. The change is made to improve the internal balance of the codex.
Crimson hunter I compared it to a nightwing for a price refernce. In my opinion nightwing is much better fighter than crimson hunter, and yet, it's cheaper. I wouldn't increase his cost at all.
Hemlock Well, hemlock is described as a weapon of nightmare, the ultimate war crime by standards of Eldar. I thought rules should, at least in a way, represent it in battle. But I admit, I just made him in a hurry, it requires more thinking. And as with everything else, he needs to be good so the idea of taking him over crimson hunter would not be dismissed immediately.
Dark reapers True, 10 pts it is.
If I missed something, sorry, I will add later, my head is about to explode!
Edit: What I wanted to achieve with this changes. Imagine you are going to a tournament and there is a million dollar award for a winner so you are strongly motivated to make as strong list as possible. Let's say you can take 400 pts in fast attack. What will you take? Of course, as much warp spiders as possible. Why? because they are one of the most versatile units in the codex and can deal with infantry, vehicles and to a some degree with flyers. Sure, vypers are ok, hawks are very good, crimson hunter has it's uses, but spiders simply outclass them all.
I wanted to make changes that will make you think about what will you take. To bring all units on pair with our best units. And fix their price accordingly. The other way to achieve this would be to nerf some units, like serpents, so they stop being auto include.
