I wouldn't mind seeing the Cowboys pick up Andy Dalton. I think he would be a good backup after developing a couple of years. In the mold of Jason Garret. He is smart, can play under pressure, a gym rat and a perfectionist.
Of course, you can't have McGee and Dalton on the same roster. Plus, I think there are positions of need out there that could end up being starters later on that will draft in the same range. For that reason alone, I wouldn't draft Dalton. I just couldn't give up a possible future starter for someone I think will be a career backup. (although a good one)