Right now until they boost reward and exp from normal mobs the only way to lvl is NM. There really is no choice granted i lvl to four earlier grinding mobs but the exp was crap compared to nm and there is very little for low lvl nms. They probably should have a faster re spawn time than the higher lvl ones. Grouping in Eureka needs to be easier not a total social blackout with the outside world it currently is. Sadly the relic weapon and armor are inferior to the tomestone and that loses some of the meaning in doing it. Yes it might be faster than creation grinding but only because for w/e reason you haven't lowered the costs of the gear when creation is basically useless so hurry up and nerf the costs plz and thank you.