Be a viable family means had made men not too old for make money on the street even only bookie and shylocks and making new members on short time. LA is defunct Tommy gambino run what remains but could be absorbed by the gambinos; last making ceremony in KC was in the 90s and the 20 made men was old and are dying.
Also for me the next will be chicago or Detroit.
The decavalcante had the Jersey which the 40 % of people are italian;philly has filled the ranks with the Scarfo guys and made 3 people.

So next 10-20 y: KC,Buffalo,Detroit,Chicago.