hell yeah, thats a good mindset to have

if you want specifics, the main thing holding this game back for me is that the premise isn't really developed to the point of emotional investment. obviously the game is gonna be a bit rough around the edges, but I don't think that'd negatively impact my experience if I cared about what was happening beyond just wanting to see the sex scene.

it doesn't have to be super deep or philosophical, but actually exploring what sexuality means to someone who's undead would make the sex scene feel a lot more interesting and "earned," I guess. maybe Ai doesn't believe that you're actually attracted to her bc she's a zombie, and so you initiate sex by bein' like "well then, lemme prove it to you" or something. it doesn't even have to be serious, having a lot more jokes about the situation would also make the game's concept feel more developed. like, if she tried to hide the fact that she's a zombie (despite being bright fucking green), and she's somehow shocked that A) you knew and B) you're ok with it. 

your art style isn't the best for raw sex appeal, but it has a lot of potential for characters that're endearing through charm, so I think developing Ai's character or sense of humor would make her more attractive in the long run. basically, a bit of comedy (or maybe a bit of pathos) could add a lot of texture to a game thats otherwise kinda flat till the end, and create a deeper attachment to the character we're supposed to be invested in seeing naked.

also her nipples should be green. can't explain why, it just feels right to me