Especially considering the skill discrepancy between first and second string in almost all positions, ejecting the player with substitution is still a huge pena

Especially considering the skill discrepancy between first and second string in almost all positions, ejecting the player with substitution is still a huge penalty. I also wouldn't be surprised if teams responded to this by rewriting their contracts to clarify what happens to the salary a player would earn for a given game when they are ejected. Those two factors are likely to be control enough. My concern with it is more that we'd end up with the same silliness that soccer gets where someone is barely touched and falls over looking to draw a foul.