Here is my plan to settle it between Barack and Hilary:
-- They have both earned a place on the ticket, they agree that it will the two of them. Order will be decided by who has the most elected delegates when the primaries are over. That way they can still "let the voters decide" but no have the incentive not make this a mutual destruction situation where whoever wins gets a worthless nomination.
-- They also agree that they will switch off -- so Obama is President for 4 years, then Hilary, then Obama is young enough that he can run again. Whoever is VP has enhanced responsibilities -- so Hilary might have more National Security responsibilities in the first administration.
-- An Obama/Hilary ticket also plays to the traditional campaign roles of the Presidential and Vice-Presidential candidates. Obama is the ideal inspirational leader and Hilary can certainly fill the attack dog role we will need in going after McCain and the Republicans.
-- Florida and Michigan are re-run as caucuses. Just rerunning them favors Hilary, but having them be caucuses favors Obama. Also with caucuses you are building organizations that will be useful in the general elections while primaries encourage running of negative TV ads which end up hurting whoever the eventual nominee.
I think with that we have a system that will produce a strong ticket without damaging the eventual chances for victory.