personally, i don't giva a rat's ass about new models, it's more important that valve fixes the lagspikes and stutters.
since the bot update (the one when they added them) i've been unable to play CSS properly. the game freezes for a few sec (especially when in firefights, of course) and then i'm dead. bugs me to no end!
fixing those shitty bugs are more important than adding some stupid models.
I've lost my respect towards Valve since Hl2 came out. if you read the CSS forums on the steam site you can see that ALOT of people are having the same problems as i have and still all they do is shit forth new maps and bots.