Animation Appreciation Thread #8

The Sakuga Wiki [JP] - http://www18.atwiki.jp/sakuga/
http://www.pelleas.net/aniTOP/

Other websites: http://pastebin.com/r2Vcy4b2

Animation on Twitter, Tumblr and Youtube:
http://pastebin.com/CQa8wU3q

Previous threads:
#1 http://dis.4chan.org/read/anime/1291816034 | #2 http://dis.4chan.org/read/anime/1314681601
#3 http://dis.4chan.org/read/anime/1325612276 | #4 http://dis.4chan.org/read/anime/1336754773
#5 http://dis.4chan.org/read/anime/1346337747 | #6 http://dis.4chan.org/read/anime/1349463339
#7 http://dis.4chan.org/read/anime/1350859696 | #8 ...

So, I have a question for you sakuga guys.

What's the contribution of the enshutsu to the final product? I mean, most of the time what I call "direction" in my mind is actually the storyboard. When only one guy does both for an episode it's okay, but when there is a storyboard done by A that is being directed by B, what does B do exactly?
I've read in various places that the episode directors are responsible for the assignment of animators to cuts, the management of music, the handling of the script, and such. But how does that reflect in the episode we watch? It's obvious that if the episode seems great as a whole, it was well directed, but what are the variables the enshutsu influences that can be directly measured in the episode? Storyboard and animation supervision are pretty standalone and can be criticised and enjoyed on their own, but what is the contribution of the episode director, besides making the best use of the resources he has?