There's been a trend since Arena. Argonians looks overall have been changing like crazy, I like to think its because of the Hists influence constantly evolving them. Skyrims version of the Argonians are by far the coolest looking so far, and I love that they have feathers now. But how will they change in TES:VI?

Personally I they give them more feathers, and maybe add stuff like natural armor kind of like this.

http://darksouls.nexusmods.com/mods/images/196-2-1351675949.jpg

And maybe make them even more dragon like.