Not a fan of AI yet. It doesn't seem to capture emotion very well and the animation doesn't work for me. At least in what I have seen so far. I am sure that will change.
It can be fun and add to the immersion. Plus a sexy voice saying hot things is a turn on. But, I can be done reading by the time the voice starts so it can also interrupt the flow.
Neko Paradise is one of my favorites, so I guess I'm a cat girl kinda guy. I like other monster girls also as long as the moster is subtle and there is still a beautiful female form there.
I much prefer lighter happier themes. Dark and violence can be part of the back story but if it becomes a major part of the story progression I'll probably move on to the next game.
Bad art/models and some good art if it is too cartoonish. Violence and dark themes if not part of the back story. MC fighting bad guys is ok. NTR and excessive incest.
It's awesome how this meaningless question is getting some good interaction. I love most cheeses, can't have Mexican food without a tun of cheese. I just don't some if the bitter cheeses like blue cheese