So Asylon, Niselur, Barca and Astrum (who were all also some of the largest militaries on the continent) couldn't even slow the monster hordes, but a small colony of exiles is somehow going to survive? Unless the hordes have been turned down, there is no chance for any realm to survive.
All were in their own corners, without any outside support, and with no safe haven to fall back to.
If you set up a denser realm in Golden Farrow, for example, then you are just a few sea routes away from moster-free lands, with realms that don't have any (significant) rogue presence to threaten their economies. From there, you then expand outwards. Doesn't matter if you don't have any rurals or they are improductive, food can be imported from the East. Gold can come from the East, too. Along with massive armies.
If the code spawns too many rogues for even an all-continent coalition to set up a colony in a coastal city, then the code should be tweaked back to make rogues more manageable, more similar to what they were like when Dwi was first opened. Even the huge hordes of the old days, before being tuned down, would be fine nowadays, with all of the Eastern realms built up and able to help.
Because if the only path available to everyone is for Luria to carve out Morek, then Dwilight is going to suck really bad, and really quickly. We have enough continents dominated by single entities, let's not let it happen on Dwilight too.