I have been recently replaying the morrowind quests (through Morroblivion) and for role-playing purposes my character (Arch-magister of Telvanni and Hortator/Nerevarine) wants to solidify his position with alliances. This got me thinking about the situation of the three Vvardenfell Great Houses.

In the process of becoming hortator I have killed the leaders of Redoran and Hlaalu (Telvanni was already dead in my quest to be arch-magister). What happens to these houses internally - who takes over to lead their councils, who is on the rise and who is on the decline? I imagine that strong supporters of Dren and Venim would be on the decline, but could they rally and band together to prevent greater change to their Houses?

What about the families of Dren and Venim. with their patriarchs gone they would lose clout and influence, but i cannot imagine they would be decimated entirely? But Venim does not seem to have an heir as far as I can tell, not sure about Dren...