Comptroller Carrión?

Now that State Comptroller Alan Hevesi has stepped down in a plea deal with the Albany County prosecutor, speculation over who will replace him is at full throttle.
Believe it or not, Bronx Brough President Adolfo Carrión is on some early lists (the state legislature gets to decide). Carrion was trained as an urban planner but doesn't have an accounting degree. Neither does Hevesi, but he has a doctorate in public law and government and served two terms as city comptroller before taking control of one of the world's largest pension funds.
Carrion is basically already running for mayor. Would the personable beep want to run for Gracie Mansion from the more important, but decidedly less street-level suites of the comptroller's office?
If he does take the promotion, who replaces him? Council Majority Leader Joel Rivera is probably the favorite, since his father, Assemblyman and Bronx Democratic Chair Jose Rivera, will basically handpick the machine-backed candidate.
Might other young, ambitious Bronx pols, like State Senator Jose Marco Serrano, make the bid for Borough hall?
An upstater may well get the comptroller gig, since the three other statewide offices will be held by NYC residents beginning Jan. 1. But it would certainly set off an interesting game of musical podiums should Carrion replace Hevesi.