Hmm, definitely sounds like a possibility. Perhaps I am a bit biased, as I have always loved Katt's normal design, and I really want something to happen between her and Ryu. But then, maybe she can be Shamanized for a while, thinking that greater power is all she needs, and Ryu asks for her to go back to the way she was, somehow proving she is more useful that way. Probably similar with all characters, their shamanized forms being an escape of sort, that helps at first but proves to be a detriment down the road, necessitating a return to their true form.