This is the hugest "gap" they ever did from expansio to expansion with changes....
Like before they did some minor updates, new character models, a couple of new abilities, new content ofc.
This game looks more like league of legends in another camera view.
They destroyed 2v2 wich u can queue as double Tank specc, how fun would that be having 2x prot warrs tunneling rogue/hunter down, and then u cant queue healer/dps.
But as i said before healers are a lot different now than they were before, they removed like earth shield, some totems, and some other main abilities that ur healing class would need.