I like the new taunts, i like more weapons being added to the c_models system mostly because they look better and more detailed, i like that they added Snowplow back in, Suijin looks beautiful, Powerhouse looks pretty cool and has some interesting designs here and there, can't say much about Borneo since i've yet to even play on that map let alone look at any screenshots
However, the CS:GO part of the update, while i actually think it's neat to see more variety in weapon skins than just gold and/or robot heads, but i don't like how they phoned it in with some patterns like blatant map textures (like that one brick wall texture) and how some patterns are just complete eye-sores
Overall, i'm pretty okay with this update, i don't care if they just took CS:GO's stuff and just slapped it onto TF2, it's still a new thing to TF2 and personally, i like it