Drawbacks are that she cannot see too well, and that her tail is a source of nerve endings that can end up hurting her more than helping, but there is nothing to really be done about them. Another drawback are her horns are constantly growing just as her hair and nails, and she would need to upkeep them constantly if she desired to retain a large set.
MagicKnown as 'Of Equality', as her title of Nobility among the demonic race has not been earned, Katori gains the benefit from her parent[s] that allows her to see the balance of magic within the natural world as one might see Astral Projections of souls; and even go as far as to actively touch and interact with magic to bring balance back to it should she desire. Her power is nothing in comparison to her predecessor, but it is becoming increasingly obvious that from the route that Katori is traveling that she could very likely replace Baphomet in the future.
The opposing side of this magic is a side effect that comes with Baphomet's power, and that forces Katori into a state of 'mindless weapon'. There seems to only be three ways to get Katori back to her senses: Baphomet, not getting back up, or defeating her into unconsciousness/death.