One thing Bush did, by having an older and more experienced VP (a tradition followed by Obama), is that they remove the "successor" tag from them, and create party instability.
I think Romney needs a young-ish, VP with solid conservative credentials... ,maybe from the West or South to counter possible weaknesses for Romney.
Yes, I agree with you that this is the path Romney should follow if he is the nominee. I'm thinking Senator John Thune from South Dakota would be an excellent running mate for him.
