Would it be possible to get a built in prereq that tells you if you already have a feat/ability that counts as a specific feat? I know there is one if you gain a feat through a class feature that it'll tell you you already have something that counts as it, but what if you have another feat that just has the HasFeat tag of another feat (say another version of a feat that already exists and you don't want the person to take both copies of the feat)?