i think one or two need tweaking weopen wise for nexuiz MAYBE, but jesus christ, they are so much better to play on then most of the TDM maps in the current list, some of these even look suitable for 3v3 / 4v4 play, and i've not come across one nexuiz map like that at the moment that would fit decent tdm play!
Here's a few i briefly looked at and thought could be possibilites.
Some maybe only for 4v4, some 2on2 but i think you guys should check them out none the less, layout's are SPACIOUS on a few (need spacious maps please

tdm_cttourney (Cold_Metal)
tdm_batcula (batcula - seemed possible for 3v3 / 4v4)
tdm_bal3dm5 ( Difference on oppinion im guessing)
tdm_bal3dm3 (same as above in oppinion)
tdm_ame7q3dm (Thought this one was really good to play)
tdm_79dm5_beta or something like that (Was really great to play as well i thought, spacious yay!)
can you check the maps out and post comments we really need better tdm maps.