I'd like a new NFL rule

One thing that I really don't like to see is players showboating by making referee signs. It is as if they are trying to convince the referee that they should call a play a particular way. The following football signals should be off limits to players: touchdown, safety, incomplete, & first down. Also off limits should be the waving arm motion they do to simulate the referee throwing a penalty flag. I think that these things are worse than end zone celebrations when they score. Lets force these players to show the fans and referees some respect and start handing out personal foul penalties for this sort of behavior.