Guild, we all know you hate multiplayer in platformers. Doesn't mean it's a shit mechanic. Co-op seems like it would be pretty fun with a friend.
My feelings on multiplayer platforming aside, Murfy is just a bad mechanic for co-op. The entire point of this Rayman game is platforming. Why have a co-op character that doesn't do any of that? You have 4 people having a great time, platforming and bouncing around and shit like that, and one person who just pokes shit and things like that. It feels worthless and the fifth player doesn't even get to platform. It's just dull.