Rahne's new gig isn't much of a step up, if at all, to put it nicely. New salary is 750k for five years at Old Dominion, a job he "relentlessly pursued" and which probably only involves a very slight pay raise. His predecessor's next job was for 2.75, then extended to 3.2 million at an SEC school. This is the career progression for highly successful blue blood coordinators. They only go down in class to prove that they belong back up.
Ciarocca, a semifinalist for the Broyles award for top assistant coach in the country this year (Brady won), also a top candidate for the OC position at Texas, turned down overtures from West Virginia last year, and was set to make about 1 million in 2020. Almost assuredly, he will make that or more at PSU.
Rahne did pretty well to parlay what I think was going to be a scenario in which he wasn't going to be retained into an opportunity to go prove himself as a head coach elsewhere. By all accounts, he's good people and I hope he does well, but this is clearly an attempt to upgrade. Why so many people have dug in their heels on this subject is baffling to me.