Sproles' spot is misleading; he's likely to lead the backfield in snaps as Drew Brees' sidecar in obvious passing situations.
Thomas widely is recognized as one of the NFL's best screen-pass specialists, but he's also an elusive tackle-breaker as a runner. Only a handful of active running backs boast a higher yards-per-carry average than Thomas' 4.8 YPC.
Although Ingram does own the skill set to succeed as a foundation back in a ball-control offense, it's evident after even a cursory glance at 2012 game film that he's a mismatch in the Saints' pass-heavy attack. He doesn't have the lateral agility, quickness or post-catch elusiveness to keep up with Sproles or Thomas as a receiver. More problematic, the offense grinds to a halt when Ingram enters the game because his presence telegraphs the play-calling for the defense.
Expect Payton to place more of an emphasis on the ground game this season. Just don't expect Ingram to get the opportunity to justify his first-round selection.