The thing is, wherever there are a lot of people, that's where the rest will want to be. It is a social game after all. Maybe the level design is just bad then?
How can you move 2/3 of graal city to other locations? Once Destiny died out, everyone just went back to the city.
You have to give the other areas a sense of purpose.
Farming crops at destiny. Finishing Destiny...
Would it be that bad if they moved the gs arenas to Belle? Was at swamp before, I wouldn't mind.(Giving actual guild spar stats for others to see)
Putting more repeatable quests around the map, ex. Witch asking you for x amount of bugs that are currently available around the map.