So...what about Sherlina? Their backstory either haves her as a caring creator (mother of robots, I think?) to mad scientist (there's probably more I'm forgetting, honestly). I'm a bit curious on how you're going to handle her in this re-write considering how she was handled.
Sherlina was kind of hard, in all honesty.
I loved the whole thing of her being Artman's mom, but I also liked the sadistic, evil mad scientist Sherlina, so I made a compromise, 2 Sherlinas, both in seperate universes of their own.
The Sherlina in the rewrite is Seiji, based on 2013-2014/Beta Sherlina, along with the original story that she created Artman (and his siblings) because she was infertile. She still dies, and it's mostly the OBM's doing. (The OBM has a big role in the rewrite, I promise, I won't go into detail of how she dies, because I want others to try and put the pieces together as to what caused her death.)
The mad scientist Sherlina, is very heavily based on the old universe version of the Pilotverse, and she exists in my Megaman X AU as an antagonist who infected herself with a virus in order to infect the human population.