Owch. Think you could clean up some of that multiposting?
quote:
psionic nexus that has 0 space and everything built in and can only ram into enemy ships
Problem: zero components means Zero hitpoints.
If restrictions worked, you could allow only armor on it, with organic armor you'd have the effect you want.
Efficient Megascale Racial trait? How about Half-size & half-cost plating & cabling. You could fit them on baseships and drive em where you want, or build the world with half the normal number of starbases.
Mechanical assimiliation:ie borg
For borg, I reccommend "organic armor boarding parties"
With those, you can't capture through shields or SDDs, but one ship can make lots of attempts and capture lots of ships, since their boarding parties regenerate each turn!