The Cigar was too dangerous. It probably took as long as it did to hit him because the Commission had to find out who was with who.
I think the main reason he got whacked was because he didn't want to share his Sicilian heroin pipeline with the other families. "Follow the money" is always a good bet when diagnosing Mob hits.
Ntra la porta tua lu sangu � sparsu, E nun me mporta si ce muoru accisu... E s'iddu muoru e vaju mparadisu Si nun ce truovo a ttia, mancu ce trasu.