I suggest that everyone react rationally here. The situation that dshook30 has laid out here in the main forum is likely the primary reason we are voting on this right now. Don't overreact to one bad situation. Seble, the biggest questions I have are:
1) How do you figure out multiple user teams in one world? You can't do it simply by looking at IP addresses, because many HD users have family members that play HD in the same world, and therefore are using the same IP address (this is by far this biggest issue with what you are proposing).
2) In the cases where it is one person with multiple teams, if you were to remove the alias team how would you determine which one is the alias and which one is the intended main account? Wouldn't you have to sitemail each and every coach in this situation in order to handle it fairly?
3) How would you compensate people for removing their teams? Would you give them site credits? Would those site credits be transferrable to their primary accounts or would they have to use those site credits to join different worlds with the alias account than the worlds they are in with the primary account? What if the main account already has teams in all HD worlds?