I've started a campaign to level .110 Steelfist (13|10) to 0 population. It's taking up one of my expansion slots in the village I captured from Rhios, and I want that open to build more settlers or senators.
If you're close enough and want an undefended target to practice cata strikes, have at it! It's also a good place to attack overnight if you want your army out on patrol instead of sitting at home at risk to attack.