<Snipped quote by Techspert>
I don't eat many vegetables aside from lettuce, potatoes, and green beans.
That does make sense, now that i think about it. The first appearance of the form didn't give much content for the super attack animation either. It all makes sense. I think that it is possible to stack super saiyan forms on it, because nothing so far has said that couldn't be done.
It's not really too late. There's just a lot of game there to do that you won't be able to do out of the gate, and you'd have to know which events you could/could not do. And patience. You need loads and loads of patience. The next best time to start will be right around whenever the Global version gets the Gogeta/Janemba dual dokkan fest.
It would be totally within the realm of possibility to stack SSJ on it, but that's probably going to not happen until super's final arc.