About Yuri's new model, it's ok. Not really blowing my skirt up, but they clearly put a lot of work into it - movement, hairstyles, emotes, accessories etc, so it'll probably grow on me. Definitely not an isekai Pikamee situation.
Me personally, though, I REALLY like her original model. You can see how adorable it can be in this clip. So I'm gonna miss it, but the new one's alright.
WRT coomerbait, I honestly don't mind a little bit of that, PROVIDED that the performer has more to offer as a streamer than just that, and Yuri definitely does, so a little cleavage doesn't bother me.