You probably should avoid WoW Classic when it comes out.I've just finished running the first higher level dungeon after the whole "scaling the world" happened. It just happened to be Blackrock Caverns. The group was decent, we at least remembered some of the mechanics, and only wiped twice on some trash before reading up that we had to stack to share the damage from the meteor abilities they did.
All in all, it took us over 30 minutes to finish the dungeon. A normal dungeon...
Now, if i didn't know better at this point i'd be inclined to think that if this is NORMAL, then heroic must be insanely difficult!
So move forward to level 110, a player queues for a random heroic aaaaand...it's NOTHING like they imagined...it's trivial at best. Even lower mythic+s take less time to complete.
Now i'm no genius, but how can this be normal?....