I wouldn't have to, because flight paths exist. You can take a flight path from one hub to the next in WoD, the only change is that in between you will need to be on the ground.
Don't complain about having to go AFK during flight paths. Is flying in your own honestly any better? Mount up, press spacebar until you're at a desired height, point yourself in the direction of your objective, and press the auto-run button. Flight paths or manual, both are AFK fests, the only difference is that after you're done AFKing you might find your character stuck on a tree or a mountain.
Also keep in mind that Draenor is being designed for ground mounts. Therefore you cannot compare it to any past expansions, which were all designed for flying mounts. Are we going to see zones similar in layout to Storm Peaks, Icecrown, or Kun-lai? Most likely not. This is the reason the argument "wait until WoD" is a valid one.