I can see nothing but trouble coming from trying to include the Dragon Balls. I mean, firstly, how would the wish mechanic even WORK? What if you wished to be something impossible like a vampire-husk-necromancer? How would you even relay to the game that you wanted to be a vampire-husk-necromancer?
Still, if you can get it to work, I'm all for it. Now, a couple things:
1. If you want to add in rapid-fire Ki blasts, all you have to do is increase the number of targets. I noticed that the Ki blasts right now seem a bit underpowered, and simply copied the interaction and upped the number of targets to 10 and doubled the recharge time. I went into the arena, used it to completely screw over some poor saps, and labeled it a success. So there's that, but using it in adventure mode makes me scared sockless (and you know how much dwarves love socks) of saiyan bandits.
2. You may want to consider changing the Super Saiyan interaction into a transformation interaction instead of a syndrome interaction. This would allow you to get the "gold hair and turquoise eyes" descriptors, and make increasing things like speed easier, and also maybe add in a rapid-fire Ki blast and improved flash step to the creature, to reflect Super Saiyan's increase in speed and power. This would also open up the possibility of Legendary Super Saiyan, as you could modify body size. Also among the possibilities this presents are Super Saiyan 2 and 3, as you would need to go Super Saiyan to access 2, and need to go 2 to access 3, and so forth, if you want to add in Super Saiyan 4.
Lastly, the Kamehameha Wave. Trust me, I want this just as much as you do, but I cannot think of any way it would accurately reflect the Kamehameha, unless firebreath-type interactions can be set to have increased range. Speaking of that, I'm off to the arena to see what I can do. Will edit/post again with the results.