Deleted my previous reply as I think you'll get more out of this one from my perspective as dev. Please read the bold text for summary.
When you said "I'll keep adding new girls when I see it fit", when do you consider it "fitting" to add new girls? If Camila's the first one this year, that's fine. But I suggest do it properly. Try to at least have a collar and pregnancy event if you can't make her marriageable or include her in a harem yet or focus on her in the next 2-3 updates until she's complete.
As a fellow dev, I think what's lacking in this game is 2 things. First is quality assurance. It's weird how you're fine with leaving unfinished characters in the game. It's also weird how you're fine with adding more unfinished girls in the game. In the comment below there was a guy that complained about the art of the girls.
Second is the lack of direction/proper planning. I'm not really sure how you guys plan your updates but it only makes sense that existing content should be prioritized over future content.
The base game is already done. Just remove all unfinished girls. You'll be left with probably 6-8. That's your base game and that would feel like a final release. Less options but the experience would still feel complete overall as there are no loose ends. At this point, you're just making add-ons or DLC in the form of monthly release.
So the reason why it feels incomplete is because you guys don't deliver a complete experience of your DLCs. Not because it's not in final release. Adding new girls are obviously bigger changes than adding harems so I'm not sure why you just don't focus on delivering bigger DLCs for consecutive months. It's weird how you guys just leave it unfinished and jump to a completely unrelated deliverable next month. Case in point, this Camila update and the next one. You could spend the next 1-3 releases wrapping up Camila after adding her but you won't. You'll leave her unfinished for months then wrap her up when you feel like it.
That's been your practice and it led to this version of the game where a lot of things are just incomplete. The game felt unfinished because you deliver unfinished DLCs (mainly new girls) and keep them unfinished for a long time. It's lack of proper planning. If you guys just planned on taking it one DLC at a time, then it would've felt more like a "final release" after each DLC and it would be easier to patch like that.
Anyways, those are just my thoughts. The game currently lacks QA and direction. Direction being the more urgent one that needs to be addressed. I'm rooting for you guys. This isn't meant to put you down but hopefully point you to a better direction.