Glad it was useful. :) Of course increasing movement would make you stronger vs enemies, but then you could just as easily make enemies more dangerous. It's more a matter of how intense you want the game to be. If you're interested at all in experimenting with it let me know as I have a more or less complete idea in my head of how it could play, and it probably wouldn't take much work. It would involve a dash meter that would deplete with use so you can't just keep dashing infinitely.
Anyways I'm excited for your game. I really did the concept and I think your art style fits it perfectly. Lots of potential!