I think on TTT there isn't much variety when picking a map. It's usually always Crummy > Krusty > Whitehouse >Richs Then again with crummy.
Making maps take a while, So I think we could rearm some DM, GM and other maps that seem good for TTT.
I found one map that I play on Sandbox Which may seem like a good option, so I re-armed it. It has all the spawns and ttt weapons.
The map is gm_desertvilla (by Mavrel), the textures and models came in separate folders, So I had to pakrat it, some textures are missing (for a reason that I do not know)
A little Image of the Rearmed map :s
Link:
http://www.multiupload.com/SEN3J45QRDYes there is a Massive area of sand, but any camper can be picked off by a tator with a sniper and radar