I am really, really intrigued by carbon fiber acoustics. The almost zero-maintenance aspect of them is very attractive.
I did come across a CA a few years ago in a shop and spent some time with it. After a few minutes of playing, I thought, "Sounds nice. I bet it will sound great once it's broken in." I then immediately did a mental facepalm.
Having said that, a harp guitar is something I would be able to enjoy if I was living my dream life of playing guitar almost full time. As it is now, I struggle to keep my skills up to a level where even six strings are enjoyable.