I'm not blaming him for everything, but I don't think his system and decisions are all that effective with this team in this league. I think there are 15 other coaches in the league who could probably get similar or better results.
Even ignoring the system and how they're playing right now, Babcock plays his top players fewer minutes than every other coach in the NHL. Is he a genius with a grand plan who's outsmarting all those other coaches? Time will tell, but I say no.
Well every indication is that the ice time decisions comes from the Sports Science division. As such, I'd guess there's a reason behind it.
As for your first paragraph, I'm going to expand on that a bit. See, I think there's a lot of coaches that could come in now and improve us. But that's mainly because it's easier to come in with a fresh pair of eyes and correct issues than it is to build the whole thing yourself. That's why Bylsma could be good for the Pens short-term, but abysmal long-term. But if we had a different coach from the start? I'd venture to say we'd be worse off in most cases.
The reason for that is twofold. For one, fanbases always key in on flaws of their coach while judging other teams coaches on their results. Guess what other fanbases sees when they look at us? They see a coach taking a team built around young talents and bringing them straight to the playoffs two years in a row.
The other thing is that there's a logical fallacy here, and that's that we base our opinion of Babcock on how we perform given the quality of players that we have, but we wrongly tend to judge that quality as unrelated to Babcock as a coach. The reason we think he has great talent to use is because a Babcock-led team made us believe so.
As an example, we might think Babcock should do more with a franchise player like Matthews, but there's really no way for us to judge how much - or little - credit Babcock deserves for the player Matthews has been.
And that's an issue that is hard to look past. Perhaps with another coach, the Matthews we've seen lately would have been the norm. It's very hard for us to know the extent to which that is true or false.