So this suggestion might fall flat on its face, but its a combination of three insights:
1. Player consolidation (at least city-based player consolidation) is probably a good thing.
2. The northlands (Gol Krathu) is such a beautiful and dynamic terrain --- from the rugged red deserts in the south, to the tablelands in the west, to the scrub and forests in the north and the grasslands in the east. Not only is there a lot of diverse geographical regions, but the actual game-grid, so to speak, is dynamic: while in the Vrun 90% of the rooms you will encounter are omnidirectional (North, East, South, West, e.g., the salt flats, the deserts around Allanak), in Gol Krathu a lot of the game squares are not -- you have twisty turns, climb spots, holes and caves, ridges, cliffs, and so on. It's just a lot of fun to play up there, whether it be an iso hunter, or a raider, or someone trying to escape a raider.
3. Allanak has a much more robust (if spartan) culture and history to it than Tuluk.
So the suggestion: One day, Tek gets bored and Muk retires, and Tek is like: let's fucking move this city, my citizens. Poof! Just like a volcano, Allanak itself lands on top of Tuluk, eliminating it entirely, and replacing it with Allanak!
Ok, so that's a bit silly. But perhaps Allanak could slowly move into Tuluk (some calamity happened up north, the city was abandoned) --- merchant houses set up shop, noble houses (from the south) set up shop, and so on. A kind of Allanak version 2.0. And then, all of the sudden, something terrible happens to Allanak 1.0, and everyone is stuck up in Tuluk aka Allanak 2.0, a barebones simulacrum of the original Allanak.
Or, I guess, just close Allanak to play and open Tuluk -- I'm one of those who didn't find it /that/ weird of a place in terms of docs. The only problem I had with it was that it was pretty sparsely populated by PCs.