I dont see why everyone likes 2fort. I do well on every map, but I have no idea what to do on it. Nothing seems to work. Something's missing. There's only 1 way to the top level unless you're a scout, and the tactic for both sides is to fill that area with 5 sentries. It just needs another route to the top, or something.
Also the sentries need to be a little less accurate.
Other than that, Its great. I havent noticed any crazy exploits yet, or fundamental flaws. It plays well overall, and is crazy fun.