Who says the mind of a demon ages as much as a human's would? Hmm? Anyways, most NaruKyuu fics completely redo Kyuubi anyways... since it's kinda necessary. You're not into it? What happened to liking things that are considered wrong? Loving a demon, the one that killed many people of the village as well is pretty much as wrong as it can get.
I agree. It got tiring once Kishi stopped even attempting anything close to romance. It seems now that we'll be left with nothing... which isn't all that bad, because, as you said, the fanfic writers will have a lot to work with.