The coaching isn't a serious problem - the team just isn't equipped with the right personnel. Dach plays scared, doesn't shoot, and doesn't attack the zone with any ferocity. Newhook is the same. Neither are showing that they're capable or dependable second line centremen this year. Newhook looked great last year, sure, but hasn't found a groove this year at all. It's a shame that Jake Evans is even an option for the third line, let alone the second centre spot. If the players showed an vigor, then they would be used differently, but when a coach doesn't trust their drive, then he has no choice but to play the first line too much, thus burning them out by halfway through the season, while hoping Laine can come in and make a difference anywhere, knowing full-well that you do NOT put someone of his ilk into an anemic environment or he'll go back to his old ways.
So no, it's not the coach. It's the makeup of the team. You can contour the make up, but when you're structurally ugly, there's only so much you can do to turn a 3 into a 6.