Jiraya wont be coming back, best news I've heard in this entire battle. I do not want to see a zombie Jiraya coming back having to fight for the other side and lose by remembering his past. He was too awesome to be put through that.
Broken technique is quite broken, but I wonder what aces Kabuto has up his sleeves. There's gotta be SOME risk to it, maybe not to him but to someone/something else.