not odd at all, i find myself wishing for this from a reporting perspective almost daily - there are several use cases where being able to view one or the other separately is useful. I would vote for this.
I agree- we break project items into subitems, with the owner of the delivery of the item at the item level, sub items being owned as the subitem level. when we do reporting, it comes up with the item/owner - which is not completely clear. If we could have a discreet reporting function that can focus only on subitems that would be great