I would really like to see a few new anti-bomber tools.  Perhaps add 1 research topic to each race(shared by both factions) on this topic.
 
Perhaps something like:
TEC: Superior Blast-shielding(1 level):  Grants capital ships an additional 1 armor per capital ship level against damage dealt by bombers(to a max of 10 extra armor for level 10 capital ships).  Frigates gain a static extra 1 armor against damage dealt by bombers.
 
Advent: Telekinetic Overdrive(2 levels):  Each time an advent fighter squadron deals a killing blow to an enemy ship(including a single member of another strikecraft squadron), that squadron gets +10/20% weapon damage, max speed, and acceleration for 2 seconds.
 
Vasari: Suppressive Fire(1 level): Enemy ships damaged by vasari fighters are distracted for 3 seconds.  Distracted strikecraft have their accuracy reduced by 45% and distracted frigates have their accuracy reduced by 15%.  Capitalships & titans are unaffected.
 
Wellt hose were just the first ideas that popped into my head. The point is I'd like to see each race get a new technology to help counter massive bomber spam.  I figured a buff to bomber-killing speed was appropriate to advent(as telekinetic push already gives them great defense against bombers) and a defense booster would be appropriate for TEC(as they have no real defensive measures against bombers but have 2 cap ship abilities for killing strikecraft.  Perhaps my choice wasn't ideal for Vasari(since they can already jam strikecraft weapons), but I liked the idea.
 
I suspect all three would be mid-late game Techs, perhaps something like 5-7 military lab requirement.