I'm with Chugs. The D as a whole is the group that will benefit from Rolo the most, because Rolo actually seems to care what is going on with the D.
If I were to pick who might benefit on the O side of the ball, aside from the obvious Max benefits, I'd say the O line. They were exceptionally one dimensional in the Air Raid. They get to do more things in the R&S. I'm expecting them to be better ball players and also be in a position to create more headaches for the D front 7 this year. The D can't simply assume that every play without a lengthy audible will be a pass play.
There can be more slicing and dicing, but here are Rolovich's defensive rankings as a head coach by PPG, followed by his FEI defensive ranking by year in parentheses:
2016: 113th (101st)
2017: 106th (129th)
2018: 109th (117th)
2019: 98th (109th)
WSU over that period:
2016: 50th (42nd)
2017: 58th (13th)
2018: 15th (79th)
2019: 93rd (107th)
The rankings are taken from College Sports Reference. FEI comes from Football Outsiders, of course.
The FEI metric appears relatively favorable to WSU. I didn't choose it for that reason; I was going to use S&P+ but it was discontinued after 2018. Just trying to use some metric more advanced than PPG.
In any event, there's little reason to think Rolovich cares about what's going on defense more than Mike Leach based on any numbers I can find, admittedly without boiling the ocean in an effort to find any numbers that might possibly favor Hawaii over this time period.
(Relatedly, I think Leach cared about defense, but lacked any ability to make any substantive impact on that side of the ball, much like any other offense-first head coach but at an extreme level. We'll see what it looks like with Rolovich.)
If you flipped the names and the narrative about Rolovich was that he didn't care about defense--like the narrative was regarding Leach-- people would be apoplectic, claiming that the incoming head coach didn't give a damn about defense.
If one was looking at these numbers with names and other attachments removed, it might seem like last year's Swiss cheese defense at WSU might look like Rolovich's norm, rather than the abhorrent shitshow that we all hope was a one-year aberration.
All that said, I hope Rolovich does care about defense, and he seems like a nice guy who says things people like to hear at press conferences. There's reason to believe he indeed does care, with what appears to be a good set of assistants on that side of the ball. Everyone loves Dickert and the other Wyoming guys, and Banker appears to be a very good hire. Hopefully his issues at Hawaii had more to do with resource and personnel limitations than anything about his philosophy or lack of caring about what was going on.