[Shael]

hmm not sure off the power but at least the insanity is determinet by astral skill and some special (like starspawns ? was it? who get even less)

but luck scale means that you get better rolls
and its a % roll so i think its therefor indirectly affected by luck scale

for unit power yes i think luck affects that too
it sounds similar to cross breeding (spell)
there for it probably works the roughly same way