OK so here are some of my ideas of this game.
they might not be in the original game but it may give players a better expierence.
-If a player is dueling another player or the players should be able to fight while hovering in the air.
-Players above level 25 should learn the skill "ki blast" where the players shoot a ball of energy at the apponet. the longer the player holds the skill the more damage is done the more energy points is used up. this skill should have no cool down.
-There should be ki clashing. if an apponet uses a kamehameha at a distance with the enemy does the same than there should be ki cliashing in wich the player has to spam a button to win.
-ssj should have a cool down based on its upgrade. each upgrade costs 1 skill point. each skill ponts increases each stats by 0.05% , and the cool down gets decreased by 6 minutes.