Part of that could work but for me the more interesting bit of any modern Godfather movie or any mob movie period would be how such people operate in a world of RICO (with very flexible standards of proof), Witness protection programs, incredible electronic/audio/visual surveillance, defectors/informants and declining (non-existent??) ability to prevent/soften prosecution.
What made the first two movies so great was that they mixed reality, history and fantasy so well. How would Vincent or any of his leaders operate in a world where that new associate could be an FBI agent, one of their friends got 60 years for waving hi to someone outside of a restaurant, and even the boss can't just call in favors from a Senator any more?
"When the snows fall and the white winds blow, the lone wolf dies but the pack survives."
Winter is Coming
Now this is the Law of the Jungle—as old and as true as the sky; And the wolf that shall keep it may prosper, but the wolf that shall break it must die.
As the creeper that girdles the tree-trunk, the Law runneth forward and back; For the strength of the Pack is the Wolf, and the strength of the Wolf is the Pack.
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