Loved the game (and the series by the way). I liked how decisions, made Patches reflex about his past actions. Also I loved the new characters and the story. I like the change of perspective that is easy to earn a good ending, a bit more complex to obtain the gold ending and very hard to get the worse ending. I liked that a lot from the second one. Purrgatory felt like a mine field and was exciting to explore, I played it for days exploring every option.
I think it would be nice to have more neutral bad ends where you sabbotage everything (I would like to be more precise, but don't want to spoil). Also I would like the worst ending to be more different to the default bad ending.
I think the decision of ending the story in a third game is wise. I would love to see more of this universe and characters, but is hard to stay fresh making the same series for too long. This game is good, but that don't mean that is the only good game 90% can do. And I hope to see more games.