Nope, I don't want MM banned. He/she is an almost perfect contrarian indicator. If MM pops up on one of my stocks and bags it, I am very, very happy. Just one more clue that I am on the right track. Conversely, if he/she actually likes one of my stocks I do a serious reassessment!
For me, MM serves a very useful purpose - just see that he's there, get the gist of his sentiment and fast forward over the rest.
Spartz.