Why is everyone afraid of boxes?
I like what I see here, reminds me of the killhouse maps from Rainbow Six or the one from mw1. Propably alot of fun for a 1vs1 or 2vs2. The high place (inside crane?) looks to overpowered though. Remove that spot to keep it simple and on one level. Maybe add a few more height variations (and cover) for some urt jumping moves to surprise the enemies.
I like the visuals, too, apart from that strange wallpaper inside the little house thingy.
I will definetly download this map when its done, for some awesome 1on1 fights with my gaming-buddies.