It's clear to me. New Head Coach doesn't want to have an experienced Assistant who might be looked to as the first option to take over if the new Head Coach doesn't do well. Ivey has great recruiting skills, but has never had to lead a team.
Sound familiar? It's a drama that's played out time after time in sports and real life leadership positions.
It's extremely rare for someone who's never been a Head Coach to take over for a legend and do well. Maybe someone can refresh my memory with an example.
My bet is it's doubtful she'll be there long.
Actually, if that was her idea, bringing in Washington, even though she did not do well at Penn State, is also placing an option right next to you.
Cunningham had some success at VCU before returning to ND. I'm not convinced (one way or the other) that she is likely actually to get the Duke job.
As to Ivey, folks who follow legends, as you note, struggle to do well, because they are compared to their predecessor. I don't think you can't be successful. You have to have the fans on your side and keep the program going well. When the program slips, you lose the fans. And it spirals, which is what happened in Tennessee.