difficult question at all. It were many circumstances and i do not believe giacomoD that it would have take like 10-20 until the first big rat... it was just a matter of time, could have happen anytime. Think
nr. 1 is def. Gotti Sr.. For all the Press interest and bringing the mob into the public interest
Nr 2 should been tied between c. persico|casso/amuso|for nearly destroying each of there family.
nr. 3 maybe Frank calabrese jr. for the near of extinction what was left of the outfit.
nr 4 scarfo sr.