updating mechanics makes no sense when the effort should be updating the base game itself. I don't really care if the game adds new sneakers for the characters if the characters are all stock unity models with no appealing design or some of the ugliest morphs. granted the dev isn't an artist, but if he's getting paid, maybe hire some.
On what the developer is receiving in donations from the patreon account, he or she isn't earning anywhere near enough to actually pay for an artist to help out.
Also, the developer isn't asking people to buy this game; it's completely free and probably shouldn't judged as an attempt to make a 'professional' product. Likewise, it should be played with that in mind.
Lastly, the models are Daz3d and having worked extensively with them myself, I'm not sure if they are best suited to a fully animated game like this. Most games with 3DCGI content are 90% stills with some animations for sex scenes. And even then, the animated sex scenes are linear. I may be wrong, but I think this is the only fully animated game to use Daz3d models.