I won't bother answering #2 because it just doesn't personally bother me and I just don't wanna bother with that. As far as #3 goes, I don't play any monogamous paths, so I can't really answer you properly there. I will however go over your #1 briefly.
As someone who was somewhat bothered with how Kiki acted, and who was
really bothered by the lack of differentiation in her paths, I'll say... she was a little less annoyingly over the top slutty, but only a little less. It's more clear now that she is joking during the Jed scene, she isn't as overly enthusiastic about being a breeding bunny, and she had some dialogue changes throughout that made her a little bit more tame overall.
She's still just a super slut on every path for now though. So my only hope is that on the mistress/sub paths there will be something to make them stand out going forward. I would really like to be able to tone her sluttiness down a bit on those paths, she doesn't need to become a nun, but my god. I mean I don't mind moderately slutty women, but at a certain point it crosses into being too much, and starts to become a turn off for me personally. You would think that her being a
super slut, would be something unique to the
Slut Path, but what do I know?
Oh I forgot to add, the MC still just asks to see her tits afterwards... which is also just felt really off to me, so I feel you there.
*edit* Hopefully as part of Kiki's other paths, there will be a way to help her heal a bit, she obvious has problems, and it would be nice if the MC could be a bit more
sympathetic towards her. That's how I feel about it anyways.
Anyways, I really don't wanna go overboard with the whole Kiki topic again, so this is all I'll say in regards to her as of the latest update.