For most the standing poses, only the hands really need work. Perhaps the arms as well, if they need adjusting. The leg positions are fine in combat readiness postures, and they're not really doing anything when just standing around. In fact, there's little actual animation actually involved in those animations. The hand and arm postures just need a bit of adjusting to make them look more natural. It's just a little detail, but it would really improve the game.
Of course, a full animation replacer would be totally awesome. But one step at a time.
I think what Dirnae is doing is awesome. Those animations have already improved the game immensely. I can actually stand to play in 3rd person again, which I hadn't done since 2006.
I wish I knew how to animate, but I can't even modify a simple mesh in Blender. I've tried to learn how to use Blender for three years now, and I still can't wrap my head around its counter-intuitive interface. I've stuck to texturing pre-existing models in NifSkope.