Alright, had the idea, tossing it out there, I think it's good and a good finale DLC idea. Take it for what it's worth.

Description: The High King is dead, and the Civil War does little to settle the matter of who will rule Skyrim...A Moot must be called.
In this, it is the Jarls responsibility to convene and come to the decision of who shall reign as High King...But naturally the Thalmor are sure to find a way to put their thumbs in that pie, to perhaps gain a better foothold in Skyrim.

-Circumvent the Civil War completely by enacting the Moot beforehand!
-Or see to it the moot is enacted at the Civil Wars aftermath, to bring forward potential peace at last.
-Aid the Thalmor cause in Skyrim, or ensure their politics find no grip in the holds.
-Use your influence as the Dragonborn to support the Jarl you support as High King, or nominate yourself- after all, you are the Dragonborn.

That's really what I have off the top of my head. Not even considering what comes after. Feel free to chime in, I can already see this going seven different ways with you people.

Sure there are people out there who don't like the idea of being too powerful politically because it cramps their adventuring lifestyle. Well, in this...it's a choice, a choice that SHOULD, in my opinion, have been there from the start.

Yeah I agree. I'd like to see the moot. And I was a little confused why they left it out. Not a bad idea. I honestly wouldn't mind a dlc where they expand civil war, CoW, thieves guild, DB, and bards.