I would kill the freak at Gamefreak who came up with that one.
I loved the lack of runners in Black2/White2. Still, I bet we get a Master Ball at some point. Not a huge deal.
If there is only one then yeah, I would finally have a reason to throw the Master Ball. In all my games I only threw it once. At Mewtwo just because I felt he deserved it. He was so powerful he belonged in the ball. It didn't matter that I could easily catch him in something else like an Ultra Ball.
Now if there is more than one... Oh someone will die the day I find out.