It will be interesting to see. I think coaching will factor heavily because the lineup will be similar, but potentially better on paper. We lose Iafallo but gain Lewis who would likely be relied upon during the PK. Losing Walker, Durzi, and Edler will definitely help us a bit on our mobility and decision making but our D corps is still young and someone is bound to be christened with the title of fanbase whipping boy. Unless goaltending is atrocious, I think it will just be can coaching instill a more active and aggressive penalty kill strategy?
The thing that drove me nuts against the Oilers is, sure they are a ridiculously tough powerplay to stop, but at least other teams try to stop them. The Kings gave up and sat in the tightest, most passive, box formation I've ever seen and practically allowed Oilers to skate into prime scoring areas and pick their corner.
I am optimistic on what our PK could look like, but ultimately it is hard to tell as it is almost out of the hands of the players on the ice despite now having better options to go with.