Green looks a lot better to those of us who suffered through Torts and Willy. He made adjustments against the Blues that helped and, even though it was painful to watch, his strategy of taking shots but keeping them to the outside helped bring us to a game 7 vs. a Vegas team that badly outplayed us. The last time we had a coach who could make adjustments was Vigneault, and even then he didn't do much, though V's system was definently more pronounced. We should remember V was also a defensive coach until Gillis brought in players that could play an up tempo system. The fact a coach can adjust is huge, even if we don't like every single one of his decisions (see Sutter/Beagle criticism above).
Also, we will likely again have 2 rookies in the statting line up this year and 3 of the best rookies over the last 3 years in the NHL. He does implement rookies. Not as much as some like but sometimes what is being suggested by some posters would be reckless, IMO.
TLDR: Green is good. Maybe not great, but we could do a lot worse and I think we can win with him if the right personal decisions are made.