Warlords of Draenor Collectors pre ordered

My return to WoW will be through this expansion and the level 90 boost I get. I have about 5 level 85+ characters but in my mind Pandaria was so bad I just gave up on the game. So I may use the boost for a clean start and a Horde Warlock. At any rate I will gradually be playing off and on until the expansion launches. Mainly I want to see garrisons.