I heard there going to be more disciplines added to DF, so a bit of a speculation won't hurt. I'd love to see DBFZ as a discipline. Among all the most popular fighting esports, Dragon Ball is the fastest, flashiest and most fun to watch, and I'll stand by it!
It is also easy to start playing it - the controls are very comprehensible, basics are easy to learn, while teh gameplay is very deep in general. Doubts? Just look at this set