Should be 3 minutes. 10 is too long in this game. Plus what if you have multiple yellows in that 10 minutes?
Just adding more reasons to create controversy. Maybe only do it in a situation where a player from both teams is yellow carded for a single incident. Then it's played as a 10 v 10.
Keeping it simple here, but unlocking the best gear and stuff when you're at the end. The fix was to make 'New Game+' a standard but it's not worth the trade off.
Too many games, so little time to play something twice over.