Oh come on dr0p kick, please do stop being so ignorant.
Hansen has the best pool of players in the world to select from, I won't deny he's an incredible coach and easily the best in the world, but my local club coach could've won that World Cup with those players available to him.
Over the last 8 years Hansen has been almost certainly the most dominant coach across any sport, but the 2015 Coach of the Year Award wasn't for the last 8 years, it was for 2015, and in 2015 Cheika turned a failing Oz side into a team that reached the RWC Final while Hansen turned the #1 side into the world into the #1 side in the world. In 2015 as an individual year Cheika deserved to win the Coach of the Year.
I think you seriously under-estimate Steve Hansen's role in this team. If you think he
"just coaches the players" then you have a lot to learn about the way NZ rugby works.
Take a look at what happened to England under SCW after they won the 2003 RWC. A few retirements of key players and they turned from a team of champs into a team of chumps. Reason? SCW had no succession plan, no long term plan at all
After 2011, we lost a lot of players, and even more (818 test caps of experience) after the 2015 RWC and yet it does not appear to have slowed them down. Just having a great talent pool does not allow you to have a monkey for a coach and still maintain your dominance... you can check with the Brazilian Football team to verify this!
Hansen and his team have planned for the retirement of key players such as McCaw, Carter, Mealamu, Nonu, C. Smith, Slade et al, by careful and skillful management of playing time for their eventual replacements. The result of this planning is that the replacement players have plenty of experience when they eventually have to step up to the no 1 role and starting position
When McCaw retired, his replacement, Sam Cane already had 30 caps under his belt (16 of them starting)
When Carter retired, his replacements, Aaron Cruden and Beauden Barrett already had 70 caps between them; 35 each
When Mealamu retired, his replacement, Dane Coles already had 36 caps under his belt (21 of them starting)
When Smith and Nonu retired, their replacements Fekitoa, Crotty and SBW had 52 tests between them (Fekitoa 10, Crotty 14, SBW 28)
None of this happens by accident or luck, it happens through the establishment of faultless systems and highly competent management. Hansen has taken an excellent team under Graham Henry, and made it even better. To disparage him as some useless chimpanzee coach in charge of an excellent team is to completely ignore the vital role he has played, and it still playing, in making the team what it has become.