Ehhhh. That sounds... potentially pretty cringe-worthy. It seems like a way to manipulate characters without really having to be able to plausibly explain their behaviors, just this hand-wavey "oh, it's the wolf part talking." But maybe it could work if really well thought through. I may be trying to over-think things, given that I'm not certain I've ever actually read a romance novel.

I think what I like about the concept of more shifty/animaly things is the (potential) decoupling of the relationship parts from some of the human... entanglements. Humans are good at complicating things, I like (at least in concept) the idea of needs just being needs, and being this kind of feral and uncontrolled part of the interactions between characters. There's a certain purity to it that appeals to me, although I'm certain I'm doing a lousy job expressing it. Things are always so much clearer in my head!