if Muta is headlining why wasn't he announced first? the headliner is usually the first name announced. maybe there was a year where that wasn't the case but i don't recall.
I can't see Rey being the headliner, all due respect to him. obviously he's HOF worthy but I don't know about him headlining. possibly, I wouldn't be against it, i just didn't think WWE viewed him on that level.