Dispossessed are said to be the workforce of Order cities, the stone masons that constructed the mighty walls of Azerheim itself (sp).
So what should they get? Why STONE WALLS of course! Similar to how Beasts were brought together with some Endless Spells and Scenery, why not have Dispossessed & Ironweld brought togoether with some fortifications? Bonuses to save, overwatch shooting and any number of things could be useful to it. Could even have something like a Barracks where reinforcements (summoning) can be brought on from.
Also Grudges need an update, they're too specific at the moment - I like the reactionary idea above, maybe you get one pre-game grudge and one during?