I realize that what I'm posting may get me shanked in the street, but I think Warpath feels fundamentally unfinished. There are some places where it seems to be a little unbalanced, and I think a few changes here and there could fix that beautifully. Notice, for instance, that most Valve maps, even 2Fort, have somewhat circular aspects to them. Warpath is missing this dynamic, which means that it's a constant football-style back and forth, which gets old after a while.
That's not saying that I don't have fun there, but the matches seem to have a sameness to them that gets old after a while. I've been really impressed with Sunsettown for just that reason ... even though it has a "back and forth" approach, it is still circular in approach, which means that strategies are more likely to vary.
This extends to maps in CS:S, DoD, and practically any other game. Linear maps get old quicker, while circular maps have a much longer life. So, that having been said, I think the thing that would fix Warpath is the addition of a few more tunnels, paths, etc to give it a more circular feeling.
BTW, this same problem exists on Badlands, which is why I think people got tired of it so fast, although the problem was less aggravated because of the height differences in several areas of the map.
Well, that's my two cents.