I am someone who missed out on the Pandaria and Warlords of Draenor challenge gear because I had no idea there where challenges.
I also missed out on the legendary cape and WoD ring because I didn’t know they would be unobtainable.
I am not complaining.
I understand that there has been some gear and mounts that where brought back, those are not as appealing or meaningful to players as the challenge gear.
My stance is that these challenge items should not be brought back.
There was plenty of time to acquire them and there are plenty of other items that are not obtainable.