Very interesting but you can't have two different versions of you unless you cross over to an alternative reality and these realities are not confirmed to be real. We also know that skolas blew a hole in the vaults doors and broke in that way and we stopped him from controlling the Oracles powers. Another thing to add is we captured him and killed him so he is dead because their are no parallel universes and even if their were he could not cross over. So your idea is amazing and really well thought out its just that science and logic poke holes in it.