I'm with on wondering how they'll pull off pointing these existing factions towards the "happening" area way off to the right of the map. Already sailing the length of the world is a significant time investment due to the size of the Mortal empires map, and that's not even a complaint on my part more fascination with the scale the crazy bastards have made this game to date.
I wonder if the map won't have a sail off the right side of the map and show up on the left type of deal. Asking for a globe is probably too much but with all the stuff they've packed into the game so far... maybe? They could double down on the dual start system too like with Malus going between the isles and Naggarond or Imrik having the ability to confederate Caledor and move back home. Maybe Lokhir can just have a big list of places he happens to be raiding that day.
Like you say, at this point I'll buy literally anything they want to put in it. I'm confounded that something as cool as it exists everytime I boot it up.