In the recent xpacks is becoming pretty obvious that blizzard don't like the auto-matchmaking system and take any chance they have to push peoples outside it, they first purged it for any kind of reward beside gear, they then proceeded into making that gear inferior to what can be obtained in outside world (upgraded timeless, baleful, and now WQ gear), right now in every thread someone rise an argument the preferred answer is "us the group finder".
The last major attemp to drive peoples outside it is to create dungeon without this option, Arcway, CoS and Karazhan i'm pretty much sure that if not in a future legion patch next xpack they will make a raid without it.
Let's face it the auto-matchmaking as been invented by Blizzard and right now there is no mmo of a certain quality that don't have it, i remember peoples crying in swtor chat and forum asking for it, i see FFXIV has it for all the difficulties except the equivalent of wow mythic, but seem that it's own inventor is now trying to kill it.
what did you think?
note: i'm not talking about the difficulties, i'm specifically talking about the auto-matchmaking tool, FFXIV has proved that you can put normal and heroic in an automated system and peoples still kill the bosses with the same success rate of the manual looking for a group, the choice to make lfr and lfg extremely easy is from Blizzard alone.