Backup: Luke McCown

Best-case scenario: Brees and head coach Sean Payton are back like cooked crack after Payton's one-year suspension for Bountygate. Brees has the same supporting cast at the skill positions as last season, when he threw for 5K+ yards and 40+ TDs, so reuniting with the coach who resurrected his career only makes the Saints' attack more potent, provided the offensive line can keep him upright. Speaking of which...
Worst-case scenario: The Saints let veteran left tackle Jermon Bushrod go to the Bears in the offseason, leaving untested fourth-year man Charles Brown to protect Brees' blind side. Brown has started just eight NFL games, all at right tackle. If he's not up to the task, Brees will have a great view of the Superdome ceiling, while laying flat on his back.