I searched the forum and didnt find this suggestion, so here it is:
In Movie 7 agains the Androids Goku absorbs the Genkidama as an SSJ. In ESF he cant use Genki while SSJ, so perhaps u could do the following: Either enable the Genki-Powerup as a weapon for SSJ OR (would be cooler) make it possible to transform to SSJ while charging the Genki, giving Goku an extreme powerboost (mainly in melee), but let this effect run out after some time, kick him out of SSJ and take all his KI, so he has to charge up again. I don't know if this is possible, but it would be great!
In Movie 7 agains the Androids Goku absorbs the Genkidama as an SSJ. In ESF he cant use Genki while SSJ, so perhaps u could do the following: Either enable the Genki-Powerup as a weapon for SSJ OR (would be cooler) make it possible to transform to SSJ while charging the Genki, giving Goku an extreme powerboost (mainly in melee), but let this effect run out after some time, kick him out of SSJ and take all his KI, so he has to charge up again. I don't know if this is possible, but it would be great!