The Rams have one thing other teams don't, an Owner where money is no issue.
These asst. coaches that McVay is hand picking will be making more $$$$$ than they ever had....WHY? Because Kroenke WANTS McVay to be head coach of his team. He can only achieve that by allowing him to hire EXPERIENCED NFL VETERAN coaches, like they did with Kromer and Phillips. This allows McVay to not have to "babysit" his staff....The more these coaches do, the less McVay has to be concerned with and it allows McVay time to "Orchastrate" the show and NOT RUN THE SHOW.
I bet the Rams do some "Poaching of Coaches" on their own this year.
DC....Mike Macdonald Ravens DC.
OC...Bill Callahan Browns OL/Run Game.
Just my thoughts....The new staff will need PROVEN LEADERS that McVay will TRUST and ALLOW them to run their show. McVay respects Callahan, and he will bring a ton of veteran coaches with him. Macdonald will run the aggressive type of defense (like SF) that McVay prefers.