My only worry with this is, I'm not sure how many user have multiple ID's with teams in the same world, (I don't) but if there are a lot of people it would lesson the amount of human coaches on each world even more. That worries me a little.
But on the other side, for everyone complaining about having a team they've built up deleted, or losing credits. It's always been my understanding and implied from Seble's original post, that multiple teams by one person in any world was always against the rules. That's why people had to create second accounts. So why are people that tries to get around the rules complaining because they are finally going to be enforced.
And also, Seble said, he wastes so much time with this, so, if we just agree to get rid of it completely, maybe the programmers will have time to really improve the game.