I pre-ordered the Warlords of Draenor. I even got the collectors edition so I could get the upgraded Dread Raven Lord mount and Dread Raven Hatchling battle pet. The pre-order also included a free boost to level 90.
I decided to use the boost on Sucan, my brewmaster monk. I'd been haphazardly leveling him up with the dungeon finder since Mists came out. So he had reached level 58 already. I ran him through a last few 5mans so he would be 60 when I put the boost on him.
By waiting until Sucan was 60 to boost him I got the added bonus of boosting his professions. So for just another run or two through LBRS I was able to immediately have both Engineering and Blacksmithing at 600 skill. Of course I'd learned none of the recipes, but I didn't have to go through the pain of getting all the intermediate materials and skilling him up.
As a level 90, my Brewmaster started out with a full set of 489 greens. I pretty quickly upgraded his gear with a bunch of stuff from Timeless Isle. It's not the best gear, but 496 purples are much better than 489 greens. And I've got so much leather crap from Timeless Isle that I've saved almost a full set of gear in case I get a Burden to upgrade it.
I also ran through a few scenarios and 5-mans with Sucan tanking and Faebane as damage. It wasn't hard, because even with 489 greens we massively out-level the heroics, but it was challenging to hold aggro against the raid geared mains who were in the 5mans. It was also very odd to compare the quite different monk tanking to my usual DK tanking. I do have to remember that not only am I less geared with Sucan than Morn is but I do not know the button sequence or cooldowns nearly as well. So I doubly need to be careful and not over-pull. Not that it is a serious concern in a 5man, but still it's something to keep in mind.
I've also had to embark upon a couple of personal quests with Sucan. His Blacksmithing and Engineering skills were boosted to 600, but as I already noted that came without any recipes. So I've taken some time and gone back to get Jeeves and make what I can for the Engineering mounts. I should have Sucan run through MC and BWL and SSC and TK to get the recipes from there. Perhaps there are even some nice transmog items.