Most people have already brought up the point of the effectiveness of wedges, so I wont go into that. Thing is... banning wedges... what bots will be left? Spinners are already out of the picture, and for a good reason, theyre dangerous. Wedges banned, well see no more flippers, no more vertical crushers, no more vertical clampers, no more passive wedges, no more skirts (heck someone could be wedged by them, and whats the point of skirts anyway?) and hardly any axes.
So, some succesfull machines that WOULD be allowed: TAN, Kan-Opener, Stinger, Tornado (with spike setup), Thor... ermz... ermz...