Throwing this one out there.
Beast's modified Arkea strain was able to cure Shogo of a toxic poison running through his system and restore him to full health. Similarly, it saved the lives of Feral and, oh, I forget who the other victim of The Future was. Anyways, it has been established now that this modified Arkea strain is capable of some amazing restorative powers.
Why not give it a shot on Jubes? Perhaps it can cure her of her vampire-ness, and restore her fireworks, all in one whack. It's the result of three full story arcs in X-Men vol. 4, where Jubilee is considered a main character; why wouldn't they try it for her as well after it's proven to work?