Originally Posted by Tuftears

I'd actually say you want to make it easier for the opposing faction to take over the city, the longer that you've held onto it. You could do this by having the opposing faction wheel up more and more siege weapons and the like over time, and the defenders portray themselves as besieged, calling for reinforcement, and whining when they aren't forthcoming.

Eventually it'd get to the point where one lonely Horde player comes up, looks at 40 Alliance players carrying out their business. He grins and presses the button that unleashes a swarm of Goblin bombing zeppelins and ravening meat wagons.