The Redux is a travesty. The additional scenes are nice to see as a curio. The original is mystic, cryptic, unconventional, primeval, uncompromising, mysterious, unforgettable and the Redux is none of these.
I never really liked Godfather Part II as much as others. It is a good film, but just isn't anywhere near the magic of the first. Plus the whole in and out of time idea was done immeasurably better in Once Upon a Time in America. (which in my opinon blows GFII out of the water.)
When I finally rewatched Part III, it wasn't anywhere near as bad as I remembered. It is a good film, but certainly flawed. As a seperate film it would be beter. Same with The Two Jakes.
The Thin Blue Line.