While Med'an isn't the Guardian of Tirisfal, we do know from Afrasiabi that Med'an is still a cannon character.
My question is, is there anyway Blizz could introduce Med'an in-game without him completely sucking or being a massive Mary Sue?
Personally I'm alright with him being an orc/draenei/human, but they should just retcon him as belonging to one specific class. Maybe make him a mage and tone down his combat abilities that way you could make him some sort of apprentice of Khadgar. That's just my opinion and how they could make Med'an suck a lot less if he was implemented in-game.
EDIT Without him being killed off!