PVE:  Purchasable deed of land from an NPC bank for PVE servers perhaps?  No foundation spamming. No one can put anything on your purchased land unless you have set permissions to do so. No one can build anything on unpurchased land. You pay tax on the land weekly? Bi-Weekly? Monthly? When someone quits, or just doesn't pay, it goes into foreclosure. A timer ticks down for the old owner to pay last minute. Otherwise (if this is possible for them to determine), everything on the la