I think other players are like me: They hate having a list of 200 servers show up every time they change servers so they just add some to favourites and stick with that.
I think over the next few days as more and more people know about the servers they will add them to favourites and join.
Another reason is: if the servers have 0 players then it is unlikely anyone will join as who likes to play with themselves? Dont reply to this question thanx!
And
NA server? That needs the server to be physically in NA so I dont think that's a possibility.