So, basically, tendency already destroys the ghost/human mechanic since you want to stay a ghost most of the times.
Furthermore, since a ghost has only 50% hp but a ring - the Cling Ring - gives you 70% hp while a ghost.... this also unbalances the ring slots since you will have the Cling ring equipped the whole game, leaving you with a single slot all the time. Since the Thief ring is also quite unbalanced and a necessity in some areas (like a cliff in the Storm Valley where you are constantly attacked by flying enemies that are quite annoying to kill with ranged attack but will ignore you…