G7K IS AWESOME!!!
At first I thought the "harem mc" would be another empty shell, but he has an AMAZING personality as does everyone else. The dialogue and lore were black holes - I just couldn't stop reading, it was all amazing!
There was absolutely nothing wrong with the perspective, and the amount of h stuff was fine too. You did kinetic storytelling perfectly, even innovatively with the official visits feature.
It's extremely difficult for me to get into first person male mc games, for obvious reasons. Third person ones aren't as bad, but still are weird for h. G7K didn't have that issue - it was like reading a novel; a really, really good one.
I think maybe you're just being too self-critical; this is completely normal for creators. But if the game was bad, I'd say so. G7K is an absolute gem so far. I wouldn't mind a Game of Thrones book series length of just what kind of content the game already has.
Adult games don't even have to have sexual content at all, there are some adult games specifically designed around "no sexual content". So it's fine if your game is 90% sfw, it's still ecchi and the amount of nsfw doesn't break the flow of the game which is what you should be aiming for anyway.
Please give it another chance. It doesn't even need a rework... Please just continue it. It deserves completion. And you're doing a much better job than you're giving yourself credit for.