Yes.
Now before I get shot, I never said that argonians should have hair. Their "beards" could be a cluster of chin scales that merely look like goatees, which needs to be available for both sixes. Those who don't want it don't need to choose it, those who do are free to do so, which is very much like picking a beard style in Fallout 3.
I'd love to see some variety in the actual facial structure of argonians as well: beaks, divets, more spines, frills, nostril placement, and so on. Komodo dragons don't look exactly like crocodiles, for example. Maybe a really old argonian will have his frills merge with his spines. The age slider in Oblivion already changes the color of scales (unless my memory is faulty, it usually is), so that particular aspect has been considered and implemented; maybe not particularly well, but implemented nonetheless.
Not that I want to turn argonians into draconic look-alikes, but the following pictures can at least act as a springboard for more ideas: http://www.wizards.com/dnd/images/MM35_gallery/MM35_PG71.jpg http://www.wizards.com/dnd/images/MM35_gallery/MM35_PG81.jpg http://www.wizards.com/dnd/images/MM35_gallery/MM35_PG78.jpg http://www.wizards.com/dnd/images/MM35_gallery/MM35_PG84.jpg http://www.wizards.com/dnd/images/MM35_gallery/MM35_PG72.jpg http://www.wizards.com/dnd/images/MM35_gallery/MM35_PG86.jpg
That's more what I had in mind. I'm bad at wording stuff.