My guess is that Mazzone and Chang really dont want the top spot because of heat and this is a political move by Merlino. I think Georgie is considered a guy who would like the name and stature, so Merlino appeases both Mazzone and Chang by letting them do there thing without the heat and hot head Georgie gets the title he wants and whatever else he is entitled to. He did do a lot of time which especially in Philly means alot.
This would mean that the Georgie bad blood with everyone rumor is probably overblown and the dust has settled.
Ligambi probably retired in prison a couple of years ago when realized how bad the feds wanted him even at his old age
I think the smart guys in philly want Chang as boss, but since he's smart he wont do that.... just my guess this could all be BS of course
