Personally I used the spell only once in my entire time playing and it was only to test to see what happens once it wears off. Safe to say, it easily got on my "most useless spells ever made" list, along with charm animal, never to be looked upon again.
So I agree with you that they should just get rid of its hostility thing. Realistically it makes sense for it to provoke people as nobody would consent to being casted upon and bewitched, however from a game perspective it is the most useless spell out there, especially since there are far easier and safer ways to gain charisma advantage. The spell simply cannot compete with better alternatives.
They should either remove the hostility or rework it so it isn't obsolete. Same with charm animals.
