Sound very interesting, but unfortunately I can't really contribute much to the project, not being a real researcher. However, in case you are interested, I can post a list of known mafia members in Sicily, last updated in January 1990 (I ordered it from a local library). It's in Italian language though, and in later years some of its information was discovered to be outdated (for example, such as Toto' Minore still being listed as the boss of the Trapani family, even though he had already been killed by then, or the Rimi group from Alcamo being hostile towards the Greco group from the same city). However, hopefully it can be useful somehow, if you want to make charts of Sicilian families in the 80s or 90s.
I put all 13 pages in an archive in this link:
https://www.dropbox.com/s/91p0i96vf7h13vs/L%27organigramma%20della%20mafia.zip?dl=0
Thank you Dwalin. This is exactly the type of info I am speaking of. But you would be of great help if you'd convert the Italian into English and/or separate the names accordingly to town, position, borgata, etc. Compile all the info, categorize it, and then lets design a chart or a list.
I think readers would love that. I know I would enjoy seeing it. You just name the charts variously: Argrigento Cosa - circa 1985, Castellammare del Golfo Cosca 1990, Alcamo Cosca 1991, etc.
If you down with it, so am I.
By all means please start it. I think you'll love doing the project and even you will garner more knowledge as you research through it. If you had the tenacity to go to the Library for it to begin with, I know you'll pull it together well.
We gotta start somewhere right??
THANK YOU for stepping up as the first. I wanna see others voice the opinions and jump in also.