How does Khadgar factor into all this? He is on the central character list. BUT
Khadgar A is on Outland A which will become totally inaccessible when the Dark Portal connects to Draenor.
Khadgar B is on Azeroth B chilling in Medivh's Tower which, yet again, is totally inaccessible from Azeroth A, Draenor or Outland.
So how will he enter the story? And what will be his role?