I also keep thinking about two AUs involving Luka (spoilers ahead)

like one AU where the CENTINELS didn’t do the completely stupid move by not telling Luka the real reason for his mom’s death and instead of just saying ‘oh hey she died in an accident’ and then just planted him back to society without a word, they help him find closure and/or he’s schooled more privately and is allowed to ‘visit’ his mother and he might grow up to be an awesome scientist like his mom

and the other AU is where for some reason he never learns about the true reason of his mom’s death and completely goes through with the whole ‘destroying the world for revenge’ deal which may end in a complete tragedy for one reason or another.

I kind of like the first one more tbh