I feel like Nunya could jump a little bit higher, having to use the double jump for everything feels a bit annoying ngl, taking notes.

I got this impression from the video too, FWIW. For all I know this is more of a boss rush than a platformer, but if more raw height is disruptive to your level design plans, you could also try a lil extra hang time at the apex, (coverable distance being the tradeoff)