I recently bought just the base game. I see that Heavensward provides one new race and three new jobs. If I am not playing any of those, is there any reason (from a story perspective) to purchase Heavensward now, or should I wait until max level to buy it? Does the base story change at all if you have Heavensward or not?
Also, is there a good NA server for new players? I am looking for a more "mature" crowd, and no one I know currently plays.