Okay, so points of agreement as to where the game is slowed down, it could be looked at. Cramp should moved off the pitch? Agreed.
I don't see any player/ manager using head injury 'to stop a game'. As it stands, players are made to go off the pitch depending on type of injury, possibly causing them to sub or leave the team exposed. Not really sure about genius tactic of that move?!
As for rugby not being "comparable", it doesn't have to be or nobody would try anything innovative anywhere for anything. It's about trying to solve unfair actions and issues on the pitch, is it not?
Personally, I want to be represented on the pitch when some dirty oppo is clearly cheating, and that includes the ref, I want my capt to speak up for me about it.