Saints to interview Aaron Glenn on Jan. 10th [Nick Underhill: Glenn probably gets an in person 2nd interview in a couple of weeks]

Brady was developed into a franchise QB over 2 decades ago.

Again, you're completely out of context of the conversation which was naming when a QB was developed into a franchise QB by a defensive head coach in the last decade. Not when an already franchise QB won a superbowl who was developed by a defensive head coach.

Two very different things.

There are certainly advantages in an offensive HC. But you need 3 things to win a SB, a QB, and a good OC and DC. Whether it's an offensive coach or defensive coach, if you have a good one, you have one of those covered. SB level coaches are hard to come by, offensive or defensive. What's important is finding a good coach. And I don't see how eliminating half of the options on the table is helpful.