I like nekos and that style of girl with monster features, but adding more fur or scales, or a non-human face isn't attractive to me. I can look past it if the human features/proportions are still hot, e.g.
A catgirl/neko is mostly human, so no issue for me. I don't mind some fur (like #4), but paws instead of hands are a turnoff and too much animalism in the face is a write off.
Neko and cat girls are awesome and I enjoy them slightly more than regular women. One step more is acceptable, but then I lose interest and skip the content or the game.
I'll be honest - I can't understand what the appeal of all these endless monster girls is? I find them extremely repulsive both aesthetically and in purely sensual terms. To put it bluntly and crudely - I will never get a hard-on for these creations. I prefer ordinary girls and women. By the way, that's one of the reasons why I ignore Japanese games (graphics come first) - there are a lot of monster girls there.