This was inspired the question from Vendetta. If they did make the much rumored GF4 with the plot of young Sonny and present-day Vincent if money was no concern who would you cast. It is a given that Andy Garcia would return as Vincent and Leo DiCaprio as young Sonny, but who would play:

Micheal, Tom, Fredo, Connie as twenysomethings and
Tessio, Brasi, Clemenza, Carmella and Vito as middle aged.

Some Suggestions
Steve Buschemi as Tessio
Vin Diesel as Luca Brasi
Giovanni Ribisi as Fredo
Paul Sorvinio as Clemenza
Charlize Theron as Kay

what are your thoughts