Order Hall are special class-specific areas, also known as Class Halls, where players can meet other people of the same class, so it is in some ways to strengthen the identity of class again.
In Legion, players will work on the artifact and get way to their own Order Hall. Order Halls will only allow access to players of the corresponding class. It will teleport out players in other class. Players in same class share one Order Hall together, instead of using own Halls like Garrison. Players will come to Order Hall to upgrade their Artifacts with Artifact Power, and to access special quests and missions.
Complete Order campaign and a series of questline and reputation, you can purchase Order Hall Set like Challenge Gold Transmog Set in MoP. It will also allow you to unlock the third slot of Artifact Weapon, and greatly improve your Artifact Weapon item level. That's the most important!
Upgrading Artifact knowledge level by spending Order resources to study Artifact research notes. So as to speed up gaining Artifact Power, improve the max Artifact knowledge level to 25, and gaining speed to 24900%. Be sure to get the Artifact knowledge level to the highest with the fastest speed, Because Artifact Traits needs millions of Artifact Power in the late.
Order Hall can enhance your sense of belonging of career by classified quest. For example, there will be a different game experience between a Demon Hunter and a Warrior. You can increase Order Hall by six levels through study and spend Order resources, and each level has a close relation to the class skills. As for the research time, do research according to the Cooldown reset, it will need about 40 days when finished last level research. The level 6 Order Hall will add one more slot to allow using legendary items. Legendary item is a great impetus for every class spec, one or two pieces of legendary items play an important role in the early expansion, and directly affect raid progress.
Some people think that Order Hall is the patch 2.0 of Garrison. But with the above information, do you still think Order Hall is the Garrison that simple? Order Hall has an enormous impact on Artifact Weapon level, Artifact Trait, and plays a decisive role in raid progress!