Dwilight,
the SMA, the wild , the winter (love seasons. it's pretty interesting ding strategy based on variable travel times).
The one noble per player.
The atmosphere is unique. You feel that there is a constant fight between mankind and rogues wihtout the need of invasions like Beluaterra. Realm surivival is already difficult enough.
A colony is really a colony
Lots of politics, religion, brilliant players.
The mysteorios Zumas in the Volcano. Unique places like the Palm Forest of the Desert of Silhouettes.
The dream to see it fully colonized one day.