That's a pretty ridiculous reach for reasoning if you know anything about the Clintons. Hillary has her own ambitions and her own agenda. A golddigger, she is not, and while she may use his coattails to ride in on, I don't believe her term or terms would be served riding on his back. While she might listen to his advice, it does not mean that she would take it, and she definitely wouldn't let him run her office for her.
I don't think that Bill's interests lie in governing the United States anymore because he is thinking globally. He has, to put it in the vernacular, bigger fish to fry. I think some of you conspiracy theorists know what I mean.