They're apparently going with an all new presentation for her, so that could work.
I'm hoping they present Charlotte as completely ruthless, have her "take out" anyone who needs injury time off for no other reason than she can.
Honestly wouldn't surprise me if it was Bianca in the end. The eventual goal is to break them up and get both as singles wrestlers again
As much as I want Bianca to turn heel, I just don't think that they're ready for Jade to do a lot of singles matches when she returns. But maybe if it is Bianca, then they can have Naomi team with Jade for a bit when she's healthy... or send Jade to NXT where she should be, and honestly still wouldn't be nearly the best wrestler there.
