Well I wouldn't mind if she was just a good character, but she has a clear advantage that is near inescapable for some characters. I'm sure NRS won't want their character perm-banned from tourneys, so they will patch her like they did all the other characters. Kabal wasn't banned when he had the blockstun inf but I feel more people are open to banning characters now that the game has been played for a while.
I'm not sure if any of you followed MVC3 when it first launched but people were using Arthur with his projectiles at a level that most people didn't think could be beat and now nobody even uses him. I suppose there aren't 100% life comeback combos that can be started off of a full-screen super in this game ^_^