According to monday morning QB (posted June 2015), here are the top 6 candidates for an upcoming HC job.
Worth noting is the apparent serious shortcomings of McDaniels, in how he treats people, an absolute no-no in a small town like Green Bay LINK
http://mmqb.si.com/2015/06/10/nfl-future-head-coaching-candidates-adam-gase-josh-mcdaniels-teryl-austinJosh McDaniels (Patriots OC) (Other joint equal prospect in 2015 was Gase, who is now Miami's HC)
Teryl Austin (Lions DC)
Jim Mora (UCLA head coach)
Kevin Sumlin (Texas A&M head coach)
Pep Hamilton (went from Colts OC last year to Browns OC, associate HC and QB coach)
David Shaw (Stanford head coach)
Frank Reich (fired as Chargers OC Jan 2016, went to Philly as OC)
I do like Austin, he is about the right age (51) and could update the defensive scheme. Of course that might also require a hot OC if you are not convinced Bennett can hold down that spot sans McCarthy, perhaps the Packers recent acquisition as WR coach, Luke Getsy......
I'm just speculating here, and I'm not fully behind making a change (not yet at least), just pointing out the up and coming guys. A change could easily have the Packers sliding to mid-table mediocrity, or worse, instead of making things better. Before you make a change, you first need to fully accept it IS a dangerous roll of the dice.