Should be interesting. The problem with doing it in the Premier League is the amount of bad language. However if players were warned before the game that swearing at the referee would be penalised with a red card, and as people at home would be able to understand why it's done then there would be fewer arguments. It would certainly make the game as a whole much more pleasant, and if it was applied at the top level then at grassroots it could be eradicated and abuse of officials would be minimised.