One of the most irritating plot tropes (often seen in video games, but not exclusive to them) is "resetting" the character in the middle of the story, taking away their tools, capabilities and everything else just to slowly give them back.
It is irritating because I already went through the "build up" phase in the early game and I don't really enjoy fighting mid-game bosses with a teaspoon.
Sure, it can be a dramatic plot twist, but after being used so many times it kind of loses its wow-effect.