aim_shotty - Extremely fun CQC action - http://www.fpsbanana.com/maps/5294
fy_playhard_null - http://www.fpsbanana.com/maps/12290
fy_weaver-closecombat
gg_fy_poolday_reunion (I suggest replacing the current shitty one with this much better version) - http://www.fpsbanana.com/maps/4135
gg_minesweeper - (http://www.fpsbanana.com/maps/53750)
gg_pistol_3floor - I can't find the location for this map but it is awesome and i am dissapoint ;(
These are just a few that I can think of off of the top of my head. These maps have always been popular and never get RTV'd. I think you should consider adding them, atleast for a trial basis, Zero.