a lot of people have mentioned Kashyyk. but it is surprising to me that no one has said Trandosha. which is in the same system. the Trandoshans are notorious in their hunting of wookiees. they could even set it up that the Trandoshans join the empire to be unleshed upon the wookee home world for some hunting points.
they could have a taxi system between the two planets and have a wookie trandosian war! could have potential with bowdaar and qyzen companion quests there