I mean tell which specs are supposed to be good in m+ etc
For example from tanks its clear that after 23+ only dks, dhs and some palas perform well https://raider.io/mythic-plus/season...MythicLevel=99. It's not because everyone rerolled dks or dh https://raider.io/mythic-plus/season...MythicLevel=99 and I doubt there is sudden drop of skill for rest of players that dont play one of these 3 tanks, but that they dont have tools to perform well. Shadow priests are another story how Blizzard failed to do anything to balance them in m+.
I dont mind if some classes are supposed to be better than others in different type content, but I feel Devs should communicate it to players better and tell for example prot warriors and shadow priests that they arent going to even try balance these specs for m+.