They should make everything in the fighting areas destroyable. For example, you could light the bridge on fire. That would slowly burn, doing a little damage until you poured water on it. If somehing was destroyed, you would need to repair it. So there would be a point to attacking fortresses- even though the opposing clan has the fortress as an advantage, if you win you could cripple thier entire fortress by destroying everything. Also, so the fortress couldn't be attacked with 2 people in it, there would be a switch that allowed you to toggle fighting on and off. Once it is toggled, you can't deactivate it until every attacker is off the fortress area or dead, so you cant deactivate it just because your about to lose. To make sure no one snuck in to your fortress, when theres people trying to go into your fortress without fighting a menu will pop up listing the name lvl and whether or not to let him in.