*** WARNING WARNING PERSONAL OPINION!!!!! ***
With what I've heard so far, I think Shadowlands is going to end up being another Warlords of Draenor.
They're basically going back to a Raid-Or-Die model. Yes, we now have the caveat of Mythic+. That does change the dynamics.
But unfortunately, both cater to the same crowd: Those who push content.
And if gear is only going to those types of people, then your casuals are going to max out their gear and have nothing left to do.
That is exactly what happened in WoD.
I do greatly understand that max effort should yield max reward.
But I argue for a middle ground. That max effort yields
most efficient reward. But that casuals should have a method to gear up as well. Make it long, make it a slog, but make it available.
This model worked very well in Wrath. And yes, I was around for the complaints about it as well, from the same group of people who are arguing against casuals getting gear outside of raiding/mythic+ today.
If WoW continues down this path, they'll see a lot more people move to FF14, where anyone can work toward gear. Again, the elites have the most efficient way, but the casuals aren't left out in the cold.
/end personal opinion. Let the attacks begin!