I just went and checked the three "new" owners in Hall of Fame (mentioned earlier) who signed up right before taking teams there. No other history. 2 of them so far are checking in (or at least have today). The profile that took over my old team has not signed in for 5 days and counting. They are in FA/Coach signing. I think regardless of our opinions on the alias issue, we'd agree that's certainly not good for that team, but it isn't good for a competitive world, either. I have seen this sort of behavior enough to believe it is an alias and it is being used only to fill that world so they can play. Before long, they'll need a replacement for an "abandoned" team. That sort of thing is damaging in a way not related to collussion and not as immediatly noticable as a lospided trade.
Pointing that out more to counter the idea that "they're not doing anything wrong" if they aren't reported for collussion.