i just watched the jap episodes once mo, and he really didn't have new attacks.. the only thing i saw that was pretty new was shooting four medium ki blast which held tried to enclose buu and he shot a kamehameha butt buu dodged it
maybe moves they should add, are the cho kamehameha which takes longer to charge with a larger blast radius, maybe along with the small ki blast attack, add one where he shoots 3 super fast medium ki blast which homes in to his target, maybe an instant transmission move where he does the move (which takes a considerable amount of ki) and he teleports somewhat close to his opponent he has locked on to.. here he could surprise melee attack, or do a ki blast, but the opponent would have enuff time to turn around and see goku charging up if he does turn around