Im not sure if this has been posted before or not, but what if when a goku player charged a spirit bomb, other players can "share their energy" and juice up the spirit bomb, and give extra energy, it shouldnt cause beam spammers because most players would have to recharge and transform all over. The higher the pl the more energy donated. Or maybe what they did in gt when goku was much weakened from the iced eyes and then got pounded by omega, you can charge and turbo around players, and power up, and you give them some ki for a period of time or something like that.