I had a few ideas for makeing costom races.
1. When you make your costome race you should be able to say if your civ is a robotic race (yor) or Living. that way you can get the benifits of a robotic race or living one.
2. for people who whould realy like to costamize you chould have a section to make your own costome tec tree. you chould use the differint unique tec.
3.I don't know if they are going to keep super abilites in twilite of the arnor but youchould make one of your own.
Thats all for now but i will probabley think of something