Here are my ideas for two additional class choices.
Here is my idea for a new race choice. This race can be played either as Alliance or Horde; the player chooses which side to take after completing the initial starting zone.
Here are details of my idea for the proposed new profession, Woodworking. This profession has been brought up many times before, but this is just my take on what it might look like - sort of a combination of Blacksmithing, Engineering, and Enchanting.