No hate intended. Like this is a neat project and all. It's just people will mainly be coming here cause they like DDLC, and the girls from it. I feel like the recourses you invest into this really should be more focused on the main girls rather than these OCs, like they can serve well to flesh out the world, But what killed my interest was how infrequent any meaningful gameplay updates are, on top of the current gameplay being very stagnant, and the main girls (the reasons we are here) going ages without any changes. There's not a lot to do in this game, and what new content there is doesn't improve upon the current formula, it just adds the same old content across the new less interesting characters, (at least compared to the DDLC girls who had an entire extra game to be fleshed out written by Dan who himself is a great writer).
Just my opinion but thought I'd share my perspective to give you an idea of how me a player perceives this game.
I stopped playing literally one day less than a year ago and I'm disappointed at the lack of change, right down to that same background track. (its DDLC a piano track, or light sounding instruments would be better suited) I know this game isn't nearly as liked as your other one, I remember you doing a poll once, but genuinely if you focus more on improving this, incorporate more concepts and ideas from actual DDLC, focus on the girls we love, I truly believe you have it in you to make something special.
Sorry if this is harsh, I just don't want to see a great concept like this going to waste.
Edit: Also add new public scenes, I seen you say you ran out of ideas for them but the possibilities are endless. like hear me out you can have public streaking, public activities between 2 or more girls, fucking the other guy with the MC or while he watches, Public masturbation in the middle of a hallway, even just small things like convincing the girls to go a day without wearing underwear or kissing each other or the MC in front of others, convincing them to post nudes on social media.