Well, I don't know if models with less polygons than those included in CS by default would actually be possible. The p- and w-models are already ugly slabs (I mean, come on, the default AWM when lying on the ground resembles a wooden board painted green), and the v-models are far from being complex, too. It might be possible to create even less detailed models, but a) nobody would do such a thing and b) you'd hardly be able to distinguish them if they're all ugly greyish blocks...
