Thinking with my speculation cap I'm guessing this post is making people nervous:
https://bitcointalk.org/index.php?topic=334316.0One of the negative side effects of this method of protecting privacy will be large transaction delays for people using MSC?
At worst, such a change would be merely inconvenient, insofar as we would have to stop identifying Mastercoin transactions by their output to the Exodus Address. I, for one, am in favor of doing so anyway.