I agree, Kirby. Very often we forget the recruiting angle.
We also rely too much on a coach's record. The coach's record very often is determined by their QB. The GB coach has won a SB & has gotten far in the playoffs. After his disastrous coaching in the playoffs this year (kicking FGs twice on 4th & inches from the 1 yd line ), do we label him a great coach? I think that he has some good attributes but great - I don't think so.
Then there is my favorite "genius", Bill B. The "genius has won numerous SB's & undoubtedly is a good coach. People who label him a genius tend to forget that his record prior to Tom Brady was under .500.
Rex has a record of around .500, coaching with questionable QBs. Give him a top 10 QB & there is no doubt that his record would be admirable & one in which some people might even call him a great coach or "genius".
Just my random thoughts on coaches. For whatever it is worth, imo the best coach that I see is John Harbaugh of the Ravens.
I seem to remember in 1969 that the night before the Bills game, Marty Shottenheimer took Namath out & got him drunk at Brunners. We won the next day for our only win that year.