It honestly seems like they are nerfing content around covenants or at the very least going with a more approachable design for sl. Mythic+ is roughly the same difficulty as last tier but the new affix and the covenant buffs trivialize large sections of the dungeon and you can nearly one shot bosses even on tyrannical with them.
The first raid at least for testing seems oddly easy when in the past bosses where made harder for testing purposes... add to that and suddenly nearly every boss has a bleed to the point there is discussion if it is worth while to roll alliance for dwarf's racial ability to bypass most mechanics rather then be the covenant that removes bleeds is a thing...
It feels like they put all their eggs into one basket that clearly has a hole in it. End of the day I am still going to play it even if I am getting a wrath naxx vibe off the first tier in terms of difficulty I will still enjoy it.. it feels more like a big case of what could of been. I see it as a passable expansion that could of easily been a great one.