I really like the added focus on visual quality for xonotic but we still seem to accept that it must look dated for some reason. These textures are good (and i mean that) but their specularity is just too high across the board. Maps will all look silver plated.
Keep in mind that THE DARKPLACES RENDERER IS GORGEOUS and has been for years now.
It ain't modern warfare 2 but at least it ain't quake 2.
Your colour and spec could be jpg if you want to save space but bump/norm must be TGA. To save space on these make them half the resolution (128x128 for a 256x256 texture). Many of these are 256x256 with 128x128 bumps.
All these textures use bumps. Just because norms are harder to make doesn't mean they give better results (though, theoretically, norms do hold more information)
Even a proper bump and gloss on a familiar texture can really bring it to life. No part of your spec should be brighter than (html color) #AAAAAA unless it is polished foil.
My GIT build doesn't seem to have any textures at all so these are Nexuiz screenies. Mapper release please!