Played this last night on the beta server. Good job. I like the middle of the map, too bad there's no reason to spend any time in that area.
I'd suggest making another path to cap. Maybe get rid of the jail and make a path come in from that area. The jail serves no apparent purpose since you can't shoot out from it and it's too small for decent jail battles. The reason I'm suggesting another path is because it's a fairly long, somewhat straight path to the cap/grab. Even with the double jump path it's still fairly easy to defend/camp/whatever you want to call it.
The side paths have very abrupt edges. You did a good job with the texture, but I don't see any reason the edges wouldn't be rounded off.
Anyway, nice map and good job.