may be if citizenship offered new kinds of "bases" it would fit the bill ?
something like having an hotel ,a shop , a brewery , a workshop , a garage (if mecanic profession appear one day ) or a ranch like bases but keeping it to only one of thoses .
almost like an intown "tent" . And as citizen militia act as if you are a npc town member ( with karma results for pk ?

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for shops if you could have followers acting as sellers it would be fun too

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also if it become aviable to set your tents and caravans in town but pay a rent it would be fun , even better if you could move objects with caravans ( like beds , chairs , tables ,shelves and such ) and if you could move your tent without building a brand new one but having to find and bring the loker all by yourselves .
last would be having much more underground locations aviables rather then only for first loggin , it could solve the space aviable in any set city .
oh , also often we can see different npc factions in each towns ( merchants/caravaners , criminals , normal folks ... ) , could this be develloped into a more lively player intégration ? and end up playing a part in town control aswell as potential riot factor to set the town back to neutral ?
could it give "quest" to help liberate town in behalf of citizens rather then another faction ?