Yuki's right, all of those characters can do things that Mu can't. I can understand why Mu gets "special treatment" due to her great damage output, but the rest all get it too, in their own way. Tao and Valk have vastly superior movement compared to the rest of the cast, for example.
Going back to what Nemesis said a while ago, I haven't seen very many Mu's taking names in majors, and even online they are few and far between. It's actually quite rare for there to be two Mu players in the same lobby, as I'm sure you guys know. It only happens to me more often now cuz I spar with Nemesis more often. It feels like Mu gets singled out a bit too much, even though there are bigger fish to fry. The only reason that statement might not be true is because everyone complains about everything, no matter what it is.
But that's my two cent deposit for the day.