I’m on Klaipeda and so far I’ve never met with any unpleasant in game social interaction. In fact, I have an experience of camping an elite monster (Cafrisun) with a bunch of people that share timer while making sure each of them get a hit in to secure the drop (actual altruistic cooperation, crazy, I know). And I’ve had several experiences of Clerics randomly buffing passerby or dropping heals and Safety Zone to someone being beaten by mobs. Daily dungeons have pleasant people too (sometimes) since they are trans-server.
Don’t take my word for it though, since I’m pretty early into the game and I’ve never visited the darker side of the world (Dina Bee Farm), but there are plenty under the sun to see I say. I don’t know anything about the economy though, but I highly suggest Klaipeda :3 See you in game at any rate!