Well, did you ever wonder why Asylon and Niselur ended up in Luria Nova? Why nobles from those realms joined Luria rather than some other place? There was no intention to go south in the beginning, but the actions of the leaders north of luria made us go there. Increasing the player density there, while making the continent less dynamic.
Creating smaller realms of 10-14 nobles though is not the solution to fix the density on the continent, the realms depend too much on a few players being active to keep it interesting and I doubt we have those.
I personally have no qualms with Luria having gotten more out of this than other realms. I do have qualms with people who claim that Luria is populous solely because they are more active than other realms, rather than having the original thought of "hey, we got a ton of active players from those realms that migrated from the west, that's why we have such a large population and are so active". *sigh* Then they come on here and claim that their realm's player culture is what is allowing them to succeed against the coalition realms, rather than realizing that the coalition realms have either:
A) lost key regions, or in the case of Barca, their entire realm to the monster invasion
B) have collapsed in player population to the point where they have more regions than players
C) have had to recover from a previous war with Asylon and Niselur, while taking over Corsanctum's regions, in the case of Astrum
D) two or all three of the above
Not exactly an easy thing to deal with normally, and made even harder to do while you're at war with a realm that gained a ton of nobles from Asylon and Niselur.