Manning will be remembered as an inconsistent, mistake-prone quarterback, but that's not always what he has been. For most of his career, his inconsistency and mistakes were a result of trying to throw the ball while wearing Kevin Gilbride's straightjacket of a scheme.
Ben McAdoo is the Giants head coach because of Eli Manning's success in his scheme over the past two years. McAdoo was brought in to completely alter the identity of the Giants offense from a vertical, deep-drop passing game to a quick-hitting, short-throw scheme. The Giants' level of talent has generally been low over the second half of Manning's career, and that didn't change when Gilbride left. What did change was how much Manning was allowed to elevate his teammates. The offense became less about fitting the ball into tight windows and throwing under pressure. McAdoo set the offense up so Manning could show off his acumen, timing, and precision. Had Manning played in this offense over the course of his career, he would likely be viewed in higher regard. He would likely be a certain Hall of Famer and someone pushing to be viewed in the same light as Aaron Rodgers, Tom Brady, Peyton Manning and Drew Brees.