Seeds of Saibamen: could be the senju texture that when touching the ground, his sabers appear and would make siabamen stronger than normal Z warriors like yamcha and in the Saibamen added self destruct.

Genkidama: It can work in the same way as the yamcha's ki ball that controls the mouse, only the ball would be blue.

Oozaru form: This one I don't know if it's possible but if Vegeta had his artificial moon and if he could gohan could transform

and if you could it would be good to add all the forms of kaioken 10x,20x etc