They should have made him more beast-like. Remove the gown/rags and make him bald instead of having a 1800s wig. I know that would not have made him mage-like but they could have had markings or some type of insignia on his back that glowed when you clicked Left anolog/ L3

I dunno, man... Lord Harkon looked pretty beast-like to me.
(I just killed him in the big finale yesterday.)
And I don't have a Left anolog/ L3 on my computer... anywhere.
Interesting ideas though! Keep thinking.