To me, I don't think there is a whole lot wrong with Landry Jones.
Great size, strong, accurate arm. Can make all the throws. Hardly ever gets sacked. He's been a 63-65% passer the past three years. I know his stock has dropped quite a bit but if he was there in the second and differently in the 3rd, a team would be crazy to pass on him. Who knows what he becomes at the next level. And the risk for a team who already has an established QB wouldn't be all that much (especially if drafted in the 3rd round), but the reward could be huge. See Tom Brady.
And let me add, 122 TD's to only 51 INT's over his career. And that career includes being a 4 year starter.