I always found this to be funny, not that you said it, but the thinking of this. The Penguins were largely out of the playoffs with Jake Guentzel last season and the year before, they had a bloated run at the end of the season mostly because they basically gave up playing defense altogether and just scored at some insane rate which falsely gave blokes here hope in something (whilst ignoring much of the previous years I guess).
This is one of the biggest issues with a coach that is with a team too long that doesn't really care to think outside of the box, he panders to the core and the veterans he trusts the most vs what he needs to do, to make things better. He will begrudgingly try things when the game is out of reach to be able to tell reporters after the game that he "tried something" albeit, when the game was already out of reach.
It's worse knowing Dubas is likely watching this thinking yeah they'll figure it out. Although
@Zirakzigil did say Dubas was wanting to replace Sullivan so I hope this is just letting Kindergarten Kyle build his case to FSG.