you should change the hud to where it shows your max ki/health as well as your current ki/health
and one more thing, I dunno if it's already like this but, when you get into a power stuggle (when two blasts collide) I knoticed that power level is the only factor to who wins the struggle, you should change it to where both players have to hit a button repeatedly to determine who pushes the blast in which way, but the harder you push the more KI you drain, thus, whoever has more KI will win the stuggle
and one more thing, I dunno if it's already like this but, when you get into a power stuggle (when two blasts collide) I knoticed that power level is the only factor to who wins the struggle, you should change it to where both players have to hit a button repeatedly to determine who pushes the blast in which way, but the harder you push the more KI you drain, thus, whoever has more KI will win the stuggle