I never really thought choosing Vincent was a reasonable choice. I mean, Sonny and Connie both had legitimate sons (or does "illegtimate son" sounds better? -- sort of a parallel of Michael being "illegitimate" and wanting to become "legitimate" by GFIII?) This is the big thing that really bothered me about GFIII. Why Vincent? Why suddenly make up a character for the movie? Oh well, I guess these questions have been asked over and over again and I'm just repeating them.
Sure, Vincent had the characteristics of Sonny and some of Michael but his character just seemed fake, like he just suddenly appeared into the trilogy. I didn't believe in his character and the character seemed poorly written (yes, I get that he's Sonny's son but I'm sure there's more to him than that). Even though Andy Garcia was quite good as Vincent, an actor can only do so much.
At the point where Michael hands over the family to Vincent, I don't think he cared much about the business anymore. And just like what Don Cardi said, he wanted to protect his daughter and Vincent giving up his daughter and becoming the new don -- a position that he wanted so much -- adds to what Michael values most -- which is his own family.
Well, I disagree with The Hollywood Finochio in his first post. Even though the character of Kay seems a bit misplaced and somewhat awkward in GFIII, I think it adds to the character of Michael, which was what made the film so much better.
One of the big disappointments of GFIII is that the actual plot is so confusing that I had no idea what was happening the first time I saw it. Besides the character of Vincent being unreasonable, the dialogue seems jagged and just kind of strange. It didn't really feel like a GF movie (well, that's why everyone hate it, right?). But it was very standard Hollywood of the 1990's entertaining so that was absolutely fine with me.
Even though the film was 2hrs and 40min it felt like 3hrs, mainly because of the whole opera sequence at the end, which is oh-so-cliched, but that's okay because I love opera even though it kind of dragged the film along.