You wouldn't be able to have that many models since there is a limit on the number of models that can be precached. Some of the maps I play have so many models that I have to even disable even the few plugins that I have precaching models in the first place.
The only realistic way that I could conceive of this being done is via the MOTD where you have a website/page that shows the images (something I have already). Your webserver would then need to be able to interact with the game server (something my web host doesn't allow).