Cool site! Yes, thats what I'm thinking of. It would be a great resource if all this content was in one place. So you could go and find new textures, mods, models, new characters, entire buildings!
Personaly, I'm frustrated by the very excellent assets that come with doom because I want to build stuff other than the Mars Base. I am making alot of custom content (particularly urban stuff), but as you know its hard work. If there are people out there with a similar mode of thinking, we could pool our assets outsides the confines of a mod and come up with an Open Library of various themes that benefits anyone who wants to make a map.
EDIT: I want to make clear that I already have a public asset library (link below). I am not looking to put other peoples assets on my site, but I will of course put up my assets here along with anyone elses.
Currently I have a bunch of brick, asphalt, and pavement textures. I am trying to make a collection of high quality assets that work very closely together and absolutley anybody or any mod is welcome to use them in non-commercial projects.