That they're removing:
3) Content last the way they lasted in TBC and Vanilla
Let me guaranteed you, let me guaranteed Blizzard, let me insure everyone cause I'm an insurance CEO that WoW's sub will jump from 7.6 mil to 15 mil so fast and to 18 mil in the next 10 months after Warlord of Draenor Launch that the amount of cancers who quit because of the removal of Transmog and LFR/LFD will look like they're a group of 12 people.
This game grew up without LFR/LFD, transmog, and easy heroic... then it got cancer and started dying and stopped growing. It can get its cancer cured and continue growing like it did when it was a teenager.
Do the right thing Blizz.