My guess as boss would be Marco D'Amico - with Andriacchi being the largely retired subadvisor. Marco was respected by all of the oldtime guard and is close with guys from all crews - Cicero, Grand Ave etc. It's logical that DiFronzo would want a member of his own crew stepping in for him also.

Solly D spends his time with his family and helping run his girlfriend's carpet cleaning business. I see him more as an advisor to guys like Jimmy I and Toots Caruso who are probably running things in Cicero.

Marco is probably the most "Accardo-like" figure on the street right now. He's been around and worked with all the crews.