This is 2016, not 2008. An undrafted free agent running back was the Bronco's only offense in the Super Bowl and they allowed him to walk.
Richardson, Ball, Ingrahm, Vereen and Spiller have been nothing short of wasted picks and busts (Richardson busted TWICE). The Colts, Browns, Broncos, Saints, Bills and Patriots made terrible decisions and wasted valuable resources.
Eddie Lacy had a decent rookie campaign followed by a disastrous season in which the coach told him to lose 50 pounds. Another poor pick.
As for Forte, he's the only guy that's been an impact player on that list, and he was taken in 2008, the same year as Charles. He's basically been the Bears offense since that time and was cut because he couldn't be traded. Again, 3 years, $12 million, and no significant injuries that required surgery (unlike Charles).
Ray Rice? You're going to use Ray Rice as an example? Not only has he been out of the league for 2 years, at age 26, he averaged a paltry 3.1 yards per carry. The wheels fell off quickly.
Gurley is a talented back that helped the Rams and their archaic offense in 2015 but the story is still unfolding. He looks like a special player but only time will tell if he can be productive year in and year out and avoid another ACL injury.
Once again, no one is giving up a pick for Jamaal Charles.