In blitz there are a ton of players who just retreat when the game is almost over and they're ahead, leaving whoever is left in a losing situation where they should've had an easy win. Yes, these players should be banned. But more importantly, this shouldn't be a viable strategy in the first place. You should not be able to just retreat and get a win. You want the win, you can finish the battle. They removed 0-damage/0-credit expert gain, this needs to be the next thing removed to stop the leechers from ruining games.