I don't mind the "rushed" ending so much, there are tons of games 'round here that are incomplete asf even after 5 years of development.
I really like the game and the setting, but if I have to point out something negative would be that after the ending you get faaar less sex options that if you don't complete the main quest at all, as you are unable to visit Vica and Barbara post-ending. And apparently missing out the "you can now invite X to bed" announcements too.
Oh and like someone mentioned it, Catherine and Taina don't have that many scenes despite being apparently the "main girls", at least compared to Isabel or Mia