this isn't going to end until there's one rule and that rule is "Do Whatever You Want To Do."
If you want to buy 100 players to eliminate competition, go for it.
If you want to eliminate the whole "Has to Be Enrolled At The School" thing, go for it.
If you want to allow mid-game transfers, go for it.
After all, somebody might sue you if you prohibit them from doing whatever their tiny little heart desires.
But if you take kids bowling in Times Square…probation!