I've played thia a few times on the beta server (and others i think) and it is OK, but it's a bit too easy to attack - what with all the entrances. It's gameplay for the defenders is more like camping than defending. Aldo, people attacking dont use the other entrances (the roof, etc.), and when they do, by the time that they have reached the roof, the rest of the team are dead and they're getting shot at from below through the gaps in the glass. It's more of a match map then a pubber's map... which is good except i dont think many people like to use siege maps as their matching map.