You're talking about the lack of realism in living characters, but take a look to Obi-Wan during his fight with Jango, just the shot when he's using force to pull back his lightsaber and Jango just grab him with his "whip".
When I've saw, in the documentary, that Obi-Wan, in this shot, was entirely in CGI, well, I was very impressed! And I follow the evolution of CGI since a long time, with high interest so, I think I have a good eye for visual effects (without wanting to be pretentious).
Ok, when you know it, you can see this is CGI but, I find that really well done IMO!