very nice design, but the positions for players could be much better ofc =) they are too distant that makes railshots too ez. classical dm17 dull gameplay =) I'd suggest to shorten the "towers" for 1.25 times at least. additional pillars between the platforms could be nice too to cover players from each other more or less.
dunno what the external lightmaps were used for btw )) if you wanna use it, initial textures quality could be a bit higher (512-1024) =)
Edited 7.38 minutes after the original posting.