Here's what I'd like to see in my own games.

When I raise a corpse child, infecting them is quick. They are still dead however but are developing. I can wake them immediately but they'll have 0's for intellect stats and be sub-intelligent. Can't talk or do complex tasks, have slow walk speed, can't wield complex weapons. No social impact, and their only food will be human corpses. They won't heal naturally.
If they are left to cook for 24 hours, they come out normal. Still being dead though, they are prone to rotting and will fail to raise if they rot. They will also fail to raise if they freeze.

I want to pack the corpse child ability into a xenogerm.

I'd like to be able to raise corpse children that have implants and bionics but those impalnts and bionics just get trashed by the process meaning the limbs/organs replaced by those implants are considered missing. codewise I would replace them with a 0% part efficency destroyed part or implant depending on the former implant.

I want to allow corpse children to be raised with psylink, but all of them should come out soft psy deaf. Like learning that should have to be earned the hard way.

blacklist the various android mods so you don't get the weirdness that is happening now.

more as I think of it