I thoroughly enjoyed this map. There were plenty of flanks which really helped when our team was at a disadvantage.
There was an issue with doors where some players could get trapped in a small corridor if the appropriate control points were captured, but I'm sure you're aware of this (it's in the demo of my playtest, which I will upload later.)
I also found the capture times to be a bit forgiving on the final points. I remember spawning when someone began capturing the final point, and I was able to leave the spawn and stop them myself (NB: the distance from spawn to final point on this map is a bit longer than some of valve's maps.)
Design-wise, everything looked fine, although the water bugged me (I'm guessing it's not an expensive water texture?)
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Overall, good job, I'll have a demo up in a little while, if that's of any use to you.
EDIT:
http://labs.topaz-games.com/kj/tf/demos/tf2m/cp_crossroads_a3_tf2m_301209_2.zip Hope I didn't mix the maps up, this
should be yours.