Here is the problem with your analysis
1. Biden got the VeePee nod because he made an illegal deal with the 0bama campaign to endorse 0bama over Hillary. He’s not going to give that up.
2. TransCanada pipeline - Maybe the next issue in the 0bama Administration. This would not only put 0bama at odds over his base, but also raise, in the very least, ethical issues at State with Hillary.
3. Haley and Rubio have both said no. It would not rule out a Romney/DeMint ticket, if Romney gets the nod.
Cain has said he would be fine with it, and he would be an effective "attack dog" on the campaign trail.
Nice analysis.