I think it's a great idea.

Good:

- Rush Super is balanced and doesn't kill in one hit.
- Less Charging and more fighting
- Encourages aggressive play

Bad:

- Doesn't punish players for wasting their Ki since they can use it without having any.
- If they have a lot of SP, they could spam the move without having to charge, although this doesn't seem too dangerous.

A couple questions:

Moves like Spirit Bomb/Genki Dama that grow bigger if you put more Ki into them, how will they grow bigger now that Ki isn't a part of the Super Attacks?

Same thing with Beams like Father-Son Kamehameha/Final Flash/Ray Blast.

Same thing with Time-Stop (Also I think Time Stop needs a slight buff so that it lasts a bit longer).

Overall, I agree with this change  😁