A really good concept! The auto aim actually gives the game the right level of challenge. Hitboxes are a problem. Maybe the "bad" sacrifice path should have a slightly bigger difference in the story/ending, since as of now it feels the payoff isn't worth the sacrifice.
Edit: The new hitboxes feel good. Both sacrifice paths offer something different which is great! Overall, the fun boss fights and the incredibly stark contrast between the 2 styles (lol) makes this idea work well.