If you want Dwilight to remain fun, then stop trying to become an unbeatable force.
How is this not what the League is currently doing? Luria has so many nobles because it was the only place most of those coming from Asylon and Niselur culturally fit in. Most refugees are trying to leave. As soon as this war ends Luria's population will drop and the island will have some more variable realms that perhaps aren't aligned with D'Hara or Morek (the main sticking point to why there are so many refugees in Luria) and provide some more diverse politics.
