With this artstyle, I don't think humans would necessarily work out unless if you wanted them to be some sort of anime-style humans.
Honestly, myself, I became quite the opposite and got bored of games where you can only play as a human. If CDDA didn't have wolf mutations, I wouldn't be having so much fun being an OP wolf tearing apart an entire town full of other similarly-mutated zeds. Furry games with character customization, multiple enemy variations, animated sex (that doesn't look like ass or just a bunch of tweened frames), is an immediate + in my books. It's why I like Lilith's Throne for example, or BDCC. They just have about enough freedom for you to do whatever, same when it comes to sex. Obviously, here, you can't really choose - it depends on a lot of factors on what scene is triggered, like if you fail to get up, or if you enter a struggle. That, IMO, is much better. And the animations are quite decent. Just missing female options so.. males can actually use their dicks and not just for jerking off.