http://www.nexusmods.com/oblivion/mods/19796/? was a mod that came out for Oblivion that allowed for player character specific animation path without the need for custom races. Why hasnt this been done with Skyrim yet? I'm sure there was probably a change between the two games that made it not possible but I'm wondering what makes it not possible if the route has been tried.

Also I would like to point out I am aware of PCEA but it only works for custom races and does not tackle the issue I am presenting.