I agree 100%, if a team needs to add an INN player, the team should cut a player too!!
It boils down to drafting and trading appropriately. If I can see I don't have the PA's to cover a position for the season, I have to draft some depth at that position.
To not fill my team needs with a draft or trade, then be able to get a free player...even if INN...seems like rewarding incompetence/those trying to gain an advantage by drafting a prospect instead of needed team depth.