The problem with staying put with what you have is that your assumption is that it's still better than what everyone else has.
2015-16 - Pens destroyed teams with speed and even if they were down 5-1, would end up winning 6-5, there was never any quit in that team and they were the fastest.
2016-17 - A lot of teams got faster, Pens didn't look like the clear cut fastest anymore, teams were on the verge of adjusting to the Penguins.
2017-18 - The league got faster, the Pens just stayed the same, they don't win the battles they used to and the roster is pretty much the same as the year before sans a couple of people here and there, however vital they may be.
Speed is still a huge thing right now, but you need more effective players in that regard.
Sullivan needs to adapt as well, that is also a huge thing, the ability to adapt. I hate to bring up Bylsma, but hearing the whole "we need to get to our game" type of talk irks me a lot, especially when "our game" needs a f*** load of work. We all knew this, we all knew allowing so many shots is not sustainable, chasing leads isn't sustainable, etc...this team needs to take a hard look at itself before the season gets closer and closer to a disaster. For me, it starts with the coaching staff and leadership. Crosby & Letang have been bad this year, Letang being the worst on the team, but Crosby is no slouch there either, giving up on plays too early, etc.
I seriously wonder how important Tocchet was to that coaching staff right now, fire him already Arizona, so the Pens can remove Recchi and put Tocchet back.