I loved it at the start, especially Grothmar. The Metal Legion concert was the high point for me for sure! :) BJora was OK I guess but felt a lot more tedious to work thru.
Drizzlewood part 2 took just way way way too long to complete the full meta but I wanted the Otter so I stuck it out. I was able to cut the time sink down a bit by crafting the weapon set to break down for otter parts. I haven't been back there since.
Champions chapters I only do once to advance the story(*) and get the mastery points. I hop on a different character who is further behind in the Saga to earn the mastery XP so I don't have to do the DRM's more than once.
* I find it really hard to get the story particulars in the Chapters since so much of it happens in the middle of the DRMs and if you're not at the right location, or in the middle of clearing objectives, the dialog is easy to miss. I really have no idea what the story is at this point so I'll have to look for some walk-through videos to catch up.