It actually would be super convenient if you could write rules against the BO-Group. Naturally these rules would apply to all BOs in the group.
Right now, when we have BOs in a group, and we write a rule for one of those BOs we get this jumbo dialog box asking how we want to sync the rules. Miss this once (or get it wrong) and you've got a mess with your rules ; you don't know what got updated, or what's correct.
But if we had rules directly on the BO-group then we would know exactly which rules applied to ALL BOs in the group, and which rules were unique to the BO. And we wouldn't have any shocking dialog boxes about sync-this, or sync-that.
The same request would apply to BO attributes vs BO-group attributes. (I'm not on the system right now so I don't remember what's actually showing up when you visit a BO-group)
(add this to the 'more' for 8.3, 😃 )