First of all, congratulations on producing a good first theory.
Second, my main problem with this theory is that we don't know enough about what happened to the Triforce of Power to say what happened to it with any degree of certainty. We know it faded from his hand, but the triangle itself wasn't left behind like in LoZ, and the mark faded from Link's hand as well earlier in the game when he went into Twilight. If Link was going to obtain it, though, I'm
sure we would have seen it.
Thirdly, would you mind posting your theory in the
Wiki topic? Please follow the format used by myself and other members when posting there. Thanks.