While I generally agree that grandfathering people into anything isn't necessarily a great idea, I don't understand the issue in general that you're trying to create about coaches with multiple IDs... You haven't explained at all why you have an issue with that, it's been debated ad nauseum in the past, and in the end most objective people have to concede allowing multiple IDs does more good than harm... At the end of the day, if you wanted to cheat, you just wouldn't tell people your IDs were connected. And if you do tell people you have multiples, then most likely you aren't using them for any dishonest purposes. Although a guy in one of my conferences did post a season or two ago directly on the CC that he used an alternate ID to scout for his team because he was running out of money...