Looking at your new list, I feel like suggesting a few more tweaks - but I do understand that minor tweaks like that heavily depend on availability of the corresponding models and/or on how strict your gaming group is about WYSIWYG. So if your choices are based on available models, my suggestions obviously would not apply.
Anyway, if I were optimising a list like that in ideal world (i.e. in a world where I had unlimited supply of readily available nicely painted models
), I'd be tempted to try out the following tweaks. About most of them I'm not 100% sure that they'll make things better - but it would be interesting to at least test them.
1. Scrap the Executioner - it's just bad. -1 to hit on it is ridiculous.
2. Your attitude to Singing spears sounds like old edition mentality - in shooting singing spears are AP0 and vehicles have 3+, making value of those shots rather low. That's something I'd never pay extra points for unless I had absolutely no other way to spend them. Maybe it's just me though )
3. I'd be tempted to drop a couple of Fire Dragons and upgrade the Crimson Hunter to another Hemlock. This would be a significant boost of power in my experience.
4. As for mounted vs dismounted psykers... On one hand, I fully understand and agree with your points about keeping up, flexibility etc. But on the other hand I can stop thinking of the fact that if you just
dismount both psykers (still keeping them both in), you will instantly free up enough points to include 2 full extra Shining Spears (with 22 points leftover) - and that gives you two extra models that would be able to shoot and fight things, assault flyers, etc. And if you also remove their spears it will almost make +3 Shining Spears! Hell, it's pretty close to the cost of a whole extra Wave Serpent - that's how stupidly overpriced the character jetbikes are.
Now, of course there is a factor that adding extra Spears means splitting them into two squads, which makes Fortune dramatically less effective. But still, if I were you I'd be strongly tempted to trim most of the points invested into Skyrunner psykers and convert Spears into 2 squads of 6.
Alternatively, you could use those points to get back the Vyper, replace Hunter with Hemlock without reducing Dragons, or even to convert Banshees into Wraitswords.
But anyway, that's already a solid list as it is. If only I had models, I'd love to try it out myself
P.S.
And still, how do you keep Spears alive if you don't get first turn?