Yeah I agree with Arma here. Honestly some stuff looks really inconsistent in quality. Considering they are using the newest Portal 2 Engine I'd thought they go all out. Source can seriously be taken to the max on that engine branch, and this isn't very "max" at all.
I'm seeing things like old decals, old ass Hl2 props, hl2 materials. Like honestly, that content is just ugly now
I'd rather they use content from l4d2 instead, feels much better.
View models are looking a bit iffy too, but I'm sure valve will art pass the fuck out of everything. CSGO could be a very pretty game, considering that the Portal engine like I previously mentioned is balls to the wall awesome. I really hope they push Source with this game, because honestly they can do it, they really have nothing majorly expensive going on.