Not to be glib/shut down discussion, but the 140 post discussion titled New Agenda Compositions: GFI & VP doesn’t answer your questions? It has folks charting out probability distributions for every type of composition, of which nothing has changed other than the Merger atrocity (which I’m sure someone crapped on somewhere).
(sorry for gross link - on mobile)
If anything, after reading that discussion way back then, my brain screamed enough, I get it, GFI is awesome. But everyone’s mileage varies I guess.