That would be some great attention to detail that I'm sure Bethesda will never do.
Make custom animations for one race? I doubt they would ever do that.
Remember how Argonians walked in Morrowind? It seems like they've taken a step back in the animations
Why do people like those animations? They were horrible, and awkward.
I wouldn't mind Argonians having digitigrade legs/feet again. Especially if they looked like this(without the huge claw)
http://static.skyrim.nexusmods.com/mods/images/19283-2-1340475621.jpg
http://skyrim.nexusmods.com/mods/19283/
http://www.gameinformer.com/cfs-filesystemfile.ashx/__key/CommunityServer-Components-ImageFileViewer/CommunityServer-Components-UserFiles-00-00-43-74-42-Attached+Files/7271.skyrim_5F005F00_s_5F00_argonian_5F00_drawing_5F00_by_5F00_xxxbanditxxx_2D00_d383uyh.png_2D00_610x0.png
But they should atleast get a better, and more fluid movement animation for it.
The Argonians, and Khajiit in Morrowind reminded me of Kangaroos. They should have been hopping rather than walking.