Maybe a 2.5
The round we played on it wasnt all that bad, but some of the problems I felt were that, as mentioned before, it did have that cramped feeling to it and ammo was rather scarce. I really don't think it is a good idea to have a 2X recharger right on the hill, but I already gave my explanation for that.
A maximum of 4 players may do okay, but more than that, I don't think will work very well.
I played a Call of Duty map that had a stair/bridge combination I thought was interesting. I loosely mimicked that structure and just sort of built things out from there. At this point the resemblance is gone, but I kept the style of an urban setting with buildings and structures positioned at regular angles.
I tried to put function over aesthetics, leaving all texturing/lighting/scenery/sounds until I was satisfied with the flow. The hill was not the initial focal point of the map, but as a player I like the variety provided by specific objectives like in KOTH, so I'm glad a natural hill area emerged. It may feel somewhat limited with no platforms, teleporters, or powerups; but I didn't want to throw everything and the kitchen sink into the same level.