Dudes. I'm about to blow your fucking minds.
This will pretty much negate the platforming side of things, so read at your own discretion.
Press Up, Up, Up, Up, and hold A...
I thought it was a glitch at first, but it's too easy to repeat.
I tried this out thinking what I think it does and nothing happened. Is the timing very precise or something? I'll keep trying for a few minutes I guess.
Are you on NG+ yet? It only works in NG+.