As I was replying in another of my theory threads, I mentioned that it would have to be explained what happened to the Master Sword after
TP. This got me thinking.
What if, instead of being the Master Sword, the girl in the poster is Link's NEW sword? Think about it; maybe the only way to keep Ganon from coming back in EITHER timeline is to not remove the Master Sword from him. If the MS can not be regained it would explain Link not holding a sword in the poster. If a new threat were to arise and strike at Hyrule, what would the Hero use against it? Let's say this was beyond the ordinary evil, and a truly powerful blade was necessary. Like, Master Sword powerful. A new one would have to be made.
I realize the one catch with this theory is that if Ganondorf does not have the MS removed from him in either timeline, then how can he come back? If anyone knowledgeable enough in the games could work through this caveat then I think this could be a pretty solid theory.
Opinions? Suggestions? Comments?