Just a suggestion. I’m more a 1-1 person and when you add a third into a group, it changes the dynamics completely. What would you think if Wow brought out some things that were just for 2 people only? So many times I get along with one person, but then bringing an extra friend in kinda makes things a bit awkward especially when experience/ activities don’t align. If you get along with one person, doesn’t mean that your friend will get along with them too.
What would you think about a 2-person smaller scale event even if not for gearing up (maybe just a little perk) but just a side thing for enjoyment like in Darkmoon Faire or a dungeon or doing quests or making use of a garrison again for more storage?
I think it may be easier to keep one person entertained/addicted than a group of 5 for mythic building. Could even re-vamp old content to explore together.