Nice of you to offer, Tec but the Riders are doing just fine with what they have right now. What's that old saying about an abundance of riches? Messam, Allen, and Ford provide all we need in the running game.
For no reason other than that I'm a Ravens fan, I look for Ravens/Riders parallels. That's why I offered Ray Rice. The Riders are doing pretty well with ex-Raven Anthony Allen.
As regards Tino Sunseri, here's my "QB goes down" story. At the beginning of the 2008 season, the Ravens had three QBs, the new star (second-year man), an older, not-great but reliable standby, and a rookie they picked up from a Division 2 college as a development project. The older guy went down for the season in training camp, and they went with the two survivors. The Wednesday before opening day, the star got a vicious throat infection. So they went to the rookie development project and said "Kid, in four days you're starting in the NFL." The rookie won the game and never looked back.
Seven years later, the rookie Joe Flacco has to his credit five playoffs in six years and a Super Bowl MVP award. He just made his 98th consecutive start (and won). The star, Troy Smith, was just cut by the Alouettes.
Sometimes when an apparently-mediocre captain actually grips the wheel, he steadies down and his true quality shows through.
I wish DD a fast and full recovery, but until he's back, I've got high hopes for Tino.