I'd say it has potential. I think it just needs something unique and very fun to set it apart from Era. The missions were an excellent concept, but I feel like they are not in depth enough to be considered a unique gameplay feature. They need to be less about simply repeating a path(Ie save 10 people destroy 3 generators), and more of an actual story/challenge. For example, you may break into some enemies base, obtain secret information, then fight your way out. Basically, the missions need more effort put into them than simple repeating a task with a few guild members. Oh, and the level penalty on missions need to be taken out. There's no reason to penalize people for doing old missions, it's not like your level gives you any real advantage. There's a reason some MMO's do this(IE level 20 could 1 shot all level 10 content), but in Zone this isn't the case. It's just power creeping and abandoning old content.