It does seem a bit pointless to strip an asteroid when all that leaves you with is another asteroid so restricting use of Stripped does make sense. This tech should still work on Volcanics and Ice planets though.
For the VL Titan, The Maw is not OP because it only targets ships within a cone and only works against a stationary blob of ships. Desperation should probably be reworked. Also, I think it is a complete waste that it does not benefit from Plasma Wave Cannon research.
The only changes that the Revelation really need is reduced AM cost for Clairvoyance also, Guidance should provide a weapon range and RoF increase when used on friendly cap ships, SBs and Titans.
For the Advent Rebels, Mass Communion should not just decrease the cost of culture buildings, it should also make all of a player's culture buildings generate a small amount of income, giving the Advent a much needed economic boost. Shield Restore for the Temple of Renewal should be a passive ability and or be moved to the repair station. The Advent Rebels are mostly fine. However, they have 1 less technology compared to any other faction so the gap could be filled by an additional damage tech for pulse lasers.
For the Advent Loyalists, Fury of the Unity should give an overall 10% damage increase without the need to be in friendly culture and should be a tier lower and and or moved to the Hostility Tree. This combined with Ancient Retribution means that the Advent Loyalists wouldn't need a unique weapon upgrade. Planet for a Planet should allow friendly culture to capture neutral worlds that don't have hostile ships in orbit instead of giving a situational damage increase. Global Unity or some other tech should provide an increase to trade income.
The Coronata does not need a total re haul. Repossession should be un-nerfed so that it captures planets with all upgrades intact. Also, Subjugating Assault should deplete enemy AM just like the Kortul's Disruptive Strikes ability. Unity Mass just needs a range increase and no limit to how many friendly ships can contribute to the damage.