I don't like Noelle since she's an annoying one-note thirsty girl and the game is clearly pushing a romance between Susie and Noe, as poor Kris is literally a non-entity.
I like how if you spend time in the closet scene, Kris looks down in shame/disgust and no longer focuses on attacking you once he learns about Noelle, his childhood friend, throwing him under the boss to score. Des and Kris may or may not have been close at some point.
That with Chapter 4's final scene makes me feel almost bad for him.
The Snowgrave route, if it's not retconned, will most certainly be part of the bad ending. I wonder where it goes from here. And yeah, that "loss of innocence" was symbolic, but I don't think Kris went that far in someone else's home, Noe would scream if he did the dirty and Susie was around, for not to mention Asgore and eventually her mom.
Lastly, I thought monsters don't bleed, that's why one asks you "how does it feel to be made of blood", but it seems Susie does. Is she a hybrid, or is that a reference to Sans bleeding once you cut him down?