As far as i have played , i have seen nordic , Ancient nordic , dwemer , elven , daedric , orcish and dragonbone but no dragonpriest armor , i believe that there should be a dragonpriests set as it is lorewise part of the nords history! any mods or future dlcs that add something like this?

Dragonborn.

I wouldn't say Dragon Priests wore armour, they look like they wore robes with an ornate 'dragon outline' decorative metal piece.

Could be light armour.

A Dragonpriest robe WOULD be slick...

Possible. It's just hard to pin because the plate body line that dragon priests wear in the Nord Ruins dont look very protective, they just look like a 'badge of office' type of thing.

Well maybe not an armour that is 110% the same as regular Dragon Priest. Maybe just add a touch more metal.

If you're on PC, http://skyrim.nexusmods.com/mods/19014/?tab=3&navtag=%2Fajax%2Fmodimages%2F%3Fuser%3D0%26id%3D19014

If not, I wouldn't mind seeing such an armour in the next DLC so console users could get some Dragon Priest armour (other than you know who's) as well.