Like John Tortorella said a few years ago, give coaches 10-year contracts, and you'll see a vastly different (and more entertaining) game.
(I'm paraphrasing a bit, don't remember the exact quote.)
Coaches try whatever they can to win that game, that night. They know (in most cases) they have a short self life, so the thought of building a strong foundation that will reap benefits 4+ years down the road isn't really a priority. As a result, you see an over-reliance on boring systems play, a lack of creativity, and a reliance on more predictable veterans over rookies. And the sad thing is, it not only hurts the watch-ability of games, but also the development of young player (hence why you need to over cook them in the AHL) and long-term success with the same core.