Looks like it'll be decent for a 2v2 or 3v3. I still say you should add a path around behind the balcony, though. There are 2 or 3 places where a single player can sit and guard all entrances to the base. One is pictured at the bottom -- no way to sneak up behind a player defending there. Also, the light isn't lit, while the one in the other base is. There are a few texture alignment issues, too, and the clip brush on the ladder in the first picture is way too large. Feels like you're floating in the air.
I've uploaded it to the ev1 beta server, though, so you can test it with other players.