I was probably over thinking it, but when I heard the stipulation for Survivor Series, I thought Team Cena would win and someone WORSE than the Authority would come in. Then for WM, HHH gets brought back (reluctantly) - not that he would have changed much in that time, but it would have been an interesting dynamic.
Sure Cena brings him back, but smug HHH might still hold a vendetta against him for ousting him. You could still have HHH & The Authority going after Cena (and the faces on that team) for being responsible for what happened in their absence. Leading into Survivor Series, HHH was cutting face promos!