I like A because of the Flyrant, although I would not put so many upgrades on him, the Hive Commander and Adrenal Glands are the most potent IMO. And 24 outflanking Gaunts is very effective, but dangerous.
I like C because of the extra warrior brood, when you are going to outflank and DS all over the place some extra synapse never hurts!
So maybe a mix of the 2:
- Flyrant, 2 scytals, Hive, Adrenal, Leech, Parox (265)
- Deathleaper OR 6x Ymgrals (depending on what you feel like playing at that point) (140/138)
- 3x Zoans in a bare spore (220)
- The Doom in a bare spore (130)
- 8 Stealers, upgrade to Broodlord (158)
- 8 Stealers, upgrade to Broodlord (158)
- 3 x warriors, pair of boneswords, adrenal in bare spore (175)
- 3 x warriors, pair of boneswords, adrenal in bare spore (175) OR 22 Gaunts in a Spore
13 Gaunts (outflanking) (78)
1499
This is still in the same idea as you were going for but takes the best (IMO) of your ideas together. The number of gaunts are just the points that were left or instead of 1 warrior brood. With upgrades they tend to cost to much, and maybe only the outflanking ones have the chance to go into cc without the loss of models. But if you come at the wrong tableside with a big chunk of gaunts doing nothing, it is a waste. (yesterday I had 16 of them outflanking and charging 2 Dark Angels Squads together with 8 genestealers with toxin sacs, they cleaned up... hard!) Broodlords I have never tried, they are harder to kill, have abilities and more attacks.. but I am a stern believer of toxin sacs on the genestealers! An extra chance to roll 6's is gold. (if you can re-roll)
The 2 bone swords I think are great, they do not give the I 1 in base contact but the adrenal glands should give you more than enough Initiative for the most part. Also stupid scarab swarms that will try to tarpit you will be instakilled easily, or other special characters etc.
Deathspitters are great, and I understand the need to shoot harder coming out of a spore, but in 1500 games I believe every single point should go to more models or die hard cc. Only in combination with a prime the are really worth it. But I seem to take the: only shoot or only cc approach. Doing both will make them to expensive.
I still find it hard to find a good balance in 1500 points.
You want a high headcount but without upgrades some of those units are not that effective. But the same goes for your enemies of course