Dugal and the Meleotic Empire

Dugal the halfing bard and Year of the Ram twin had managed to take over the Republic of Eclia when it was absorbed into the Meleotic Empire. He was granted the title of Imperial Duke. By all accounts he served the Empire well, including acting as diplomat to the Western Kingdoms, but he hinted several times to the PCs that he was uncomfortable with the Empire and that Maloch was more than he bargained for. On occasion he has performed what could be seen as a treasonous act on behalf of the party. Word has now reached the PCs that Dugal is imprisoned in the Empire. Perhaps he can be redeemed; perhaps he could be pumped for information; perhaps he should simple be left to rot. Whatever the case one of the central political players of Argravail is currently removed from play. Who, or what is filling the vacuum?