This has probally been mentioned before but wouldn't it cool to have maybe a Kioken or rage attack. For example, when Goku uses kioken, it could either be a burst of power to save you from an oncoming blast or to get someone with a quick, powerful hit that would do more damage than a regular hit. Also, Vegeta could have his little Kioken thing that he used in the show when he went purple and stuff. Depending on your power,( SS, SSJ, or Perfect SSJ) you should be able to have different levels of Kioken( times 1,2,3,4). If anyone has a similar idea or critz, let me know.