I actually never got around to completing my class order hall upgrades. Once they got up to 12500, I was kind of just like "meh" and would burn resources on Loot Coins. It wasn't until my second legendary dropped that realized what I derp move it was. Like seriously /facepalm!
I'm having a hard enough time farming up the required amount of resources from quest. But the fact that it'll take me 24+ days for it to complete just seems absurd. What the hell is the point of this? I fufilled the requirements, why do I have to wait?
It's similar nonsense to the Class Campaign with the missions holding you back instead of being able to bang it all out. I mean Artifact Weapon Research only takes a few days which seems fair to me depending on your knowledge.