Not one person (Alliance or Horde) wants to deal with the Ebon Blade. However, they realize that turning down a contingent of powerful knights in the fight against the Lich King would be silly. They don't like it, but realize the necessity. This is why there's been so much speculation about what will happen to the Knights of the Ebon Blade faction within the Cataclysm lore. There's no more Lich King to fight, so will the Alliance and Horde still tolerate them?Originally Posted by Fuger
This 'extra story' of yours would reduce the character to a Broken, possibly breaking their mind (like all of the hostile Broken throughout the game). I highly doubt a player would like having a character that randomly starts attacking their allies (no, this would NOT be a cool mechanic, don't even think about it). If the Draenei did manage to retain their sanity, they'd either kill themselves (they've been conditioned to weed out fel energies for 25,000 years, I doubt suicide is off the list if they got corrupted), or they'd be the subject of a mercy killing by the Draenei.