Actually curious, what part(s) are you talking about not being finished? Game seems pretty complete besides the Bree stuff, and the DLC characters.
Very late response but most of my main issues are in my original statement, lots of art that was never updated. Lots of art that doesn't add player preferences like piercing or body hair. Some routes are still buggy or finicky. And some routes just still feel unfinished but all routes are technically finished so the fact that some feel lacking is not necessarily being 'unfinished' but it really feels like with some of the characters especially they kinda had issues figuring out what to do with them towards the end.
But the big thing really is just there is a lot of art and poses that were never updated, and lots of art even updated that never got fixed with the additions of player preference in how a girl looks.