My idea is the ability to add to the town militia in a city your faction is currently controlling. I read somewhere that the controlling faction of a town gets a % of the trade income in a town. It would be cool if you could give the militia orders like "attack players that shoot other players" kind of like the guarded towns except its run by players. This would make it harder to take a town back and would encourage factions to pick a town and try to keep it. And with some factions noobs could come and trade and mine in safety untill another faction attacks. And even then the battle would be much bigger if the controlling faction beefed up the town militia.