Obviously you have not read my posts on Campbell, he has the best tandem of OC and DC in the league. The Lions have had 19 top 100 picks over the last 5 yrs including a #2 #3 and a #7. They also have one of the, if not the best GM and scouting dept in the league. Dan didn't build the culture Brad Holmes did. Heck Dan didn't even hire Johnson he was there when he got there. And it was only when Campbell took over play calling and failed did he promote Johnson to OC .
Reid had been an OL coach a TE coach a QB/ Ast HC before the Eagles
The whole point of what I've been saying is while I like Rizzi he has NO coaching experience on offense or defense in the NFL or even a D1 school not as an OC , DC or even a position coach. While he may be a good to very good motivator that will only get you so far in the NFL
You have to have a guy that can motivate AND know his X's and O's VERY well