IMHO some of the deleted scenes could have stayed deleted, however one that should have been left in was the scene in GFII when Michael finally takes his revenge on Fabrizzio.
As you know, there's yet another version of the Fab revenge scene in which Michael personally dispatches Fab with a lupara. That one was filmed (Lebo's book has stills) but was never released in any form. I'd give my left
coglione to see that one.