Yeah, it's good news: Vegetta's a bit boring to play at the moment until he goes ssj. But...don't Goku and Buu use a similar attack to the Energy Dan? (Goku when he's against Perfect Cell, Buu against ssj3 Goku.)
I know those chars don't need the energy dan that much (so please don't think I'm *****ing, because this is too cool), but I was just wondering whether they would get it eventually.