The Saints offer the one thing new coaches want most; patience and time to develop their program. They also offer the one thing veteran coaches want most; a stable front office.
You have to look at it from a coaches perspective. Yes, they are way over the cap and don’t have much talent, but the Saints aren’t in total chaos and don’t have jerk owners and gms like many other teams. That’s why Sean Payton stuck around so long. I would rather work with Loomis than Craft, Khan, or Jones.