With maybe a few region tweaks elsewhere (such as tweaking the Desert of Silhouettes and the Palm Sea to put rurals and townslands and maybe even an extra city or two in between the pair of them) you'd then have a concentrated area centred around the most densely populated realms but with enough townslands and cities to stop the Luria region from dominating the region, especially if you increased the populations of a few of the other cities to even things up.
Dwilight would be much, much smaller in terms of the area to play in but it could probably be done with only a very small loss of players since Astrum, Swordfell and Morek all have a common religious culture and could coexist happily in one realm.
Why try to change the game to suit the realms currently in power? If Luria has control of all the towns and cities in the area don't just ask for more to be created. Go to war, fight for those towns and cities; make a name for your family and realm!
