Hockey systems really aren't that complicated it's not like football or basketball, defensively there is only so much you can do. The wingers need to cover the D, the D and centers get below the dots, weak side wingers drop down and cover in front of the net when needed. Defensively you need to outnumber the opponent the best you can in most situations, a lot of it relies on the players awareness.
like what are people actually asking green to do, specifically? Play less defense and more offense? Well duh
If you have good players they will execute whatever system you put forth, it's not rocket science
How can you demand a better breakout from Green but at the same time you have one single good offensive d-man and he's a rookie. You have shutdown guys with the likes of Edler, Myers, Fantenberg, Jordie Benn, Hamonic etc feeding the puck up to wingers like Eriksson, Roussel, Virtanen, Highmore, Boyd, Hawrlyuk etc who then have to quickly make good plays to their supporting centreman like Sutter, Beagle and Tyler Motte etc who then are supposed to do what with it?
The coaches suck because the team has sucked because Benning has sucked.