There's keeping it secret, then there's making sure people know where they stand, before they make a commitment in error. If you wish to enforce a particular loot scheme, that discriminates against certain members of the group, that is your priviledge; the honourable way to do this is to make sure everyone understands what's happening (IMHO). If puggers are made aware of the policy, they can't complain if they choose to abide by it.