BlizzPro has posted their BlizzCon interview with World of Warcraft Quest Designer Helen Cheng and Technical Director Marco Koegler about Warlords of Draenor and the future of WoW. The interview covers a variety of topics about the coming expansion, including why the team decided to return to a ten level expansion curve instead of sticking to the five it has been more recently (it makes for smoother leveling progression, plus level 100 is cool!), how (or if!) the time-travel aspect of Warlords will affect Azeroth itself (it shouldn't, provide we heroes rise to the occassion), and why there aren't any new playable classes or races for this expansion (new character models are resource-intensive).
But those are far from the only topics discussed during the interview. Cheng and Koegler also go into whether or not Garrisons will be character-based or account-wide, and what the different challenges are within either approach. Cheng also talks in depth about daily quests and their history in the game, the shortcomings of that particular design, and how Blizzard hopes to create a more balanced questing experience going forward so as to avoid some of the problems with quests in Mists of Pandaria.