As opposed to modifying the banned/restricted list, I'd rather just use a DBAD [Don't Be A D**k] rule. If you play Braids, you're either building a bad mono-black control, or you're being a jerk, same thing with zur... either you try to build voltron [which is easily thwarted], or your being a jerk and playing super-stasis. Easiest way to "fix" that style of problem, is just not to play with those people, then they either change decks, or don't get to play games.
As an example: I began work on the braids deck... knowing it's easily one of the most b0rked decks in the format, and by the time I had the list floating around the shop, people were pre-emptively refusing to play against it. What point is there in building the deck, if none of my potential opponents will play?
Most troublesome cards in casual formats can be dealt with in that way.