Kid Goku would be cool if implemented like said here - with the addition of the concept of Ki (basically the more you use your skills, the more you get tired) - i think this would add some spice to the gameplay
The only thing I'd truly change would be the Final Smash to be the Giant Ape (because it's iconic and famous enough to be referenced - Goku should represent the entirety of Dragon Ball and not himself alone, I'd say). The clothes can regenerate instantly after the transformation - See Little Mac.
Also I was thinking on Arle Nadja from Madou Monogatari/Puyo Puyo
The idea is to make her essentially a reverse Lucario - she starts out really strong and becomes weaker as she takes damage, changing her idle poses to match the amount of damage - a reference to Madou Monogatari's HUD
So far I thought up of having Ice Storm as B, Fire as forward B and Diacute as down B. Diacute can be cast first to increase Ice Storm and Fire's power, and she definitely should have a Puyo Puyo reference in her moves to represent both of ther series.
The only thing I'd truly change would be the Final Smash to be the Giant Ape (because it's iconic and famous enough to be referenced - Goku should represent the entirety of Dragon Ball and not himself alone, I'd say). The clothes can regenerate instantly after the transformation - See Little Mac.
Also I was thinking on Arle Nadja from Madou Monogatari/Puyo Puyo
The idea is to make her essentially a reverse Lucario - she starts out really strong and becomes weaker as she takes damage, changing her idle poses to match the amount of damage - a reference to Madou Monogatari's HUD
So far I thought up of having Ice Storm as B, Fire as forward B and Diacute as down B. Diacute can be cast first to increase Ice Storm and Fire's power, and she definitely should have a Puyo Puyo reference in her moves to represent both of ther series.