I think it would be pretty awesome if your beam size (like...the width of the beam) could be dependant on your powerlevel. Imagine seeing a Final Flash from a 15 million powerlevel Vegeta as big as your whole body! That way everyone around will know to either get out of the way or die. But then you see a tiny beam coming straight at you....so you know you can deflect it. Get what I mean? It would also add to the realism of the game. Also, the beam size could also depend on how long it's charged. I think the beam head already grows larger...but if the beam itself was larger that would be cool.