Yes I know How thus Plugin could be abused in a very BAD way but i wanted to know if there is any way to make command block be able to do /kick,ban,op,deop ETC with the use of a plugin I dont know if this is possible but i think it would be very cool. If so could some one Pleas Try to make one? Or if it is Just Plain old not possible tell me so.
Not possible, this is hard coded into minecraft's CraftBukkit's implementation of n.m.server.TileEntityCommand.