What do you define as high keys? cuz all specs and classes can do a 15, or a 10 back then.
Blizzard has balanced specs to a satisfactory degree to be able to do that content, the community on the other hand would refuse to invite a lock at a +3 for example so the community is the problem.
Aka all the wannabe elitists who are crying about this change but wont level 4 of each class and will come to the forums crying that their meta covenant got nerf, prepared a thread for them
Again the problem is the community, you do not pander to wannabe elitists because it will make the community problem even worse, you fight wannabe elitists directly.