There are to many towns. You can hardly walk 100 blocks without running into a random plot of land that has no purpose. Towns that have nothing built on them and/or have less than 3 members should be gotten rid of.
This should never happen. The owner is the town could come back to the server at any time. Someone could use a tycoon+ town claim and claim the town. There is still plenty of unclaimed land out there. -1 from me