My reasons of why Part 3 is bad

-Bad acting (sofia and others)

-Mike being weak (i want change not just weak mike, a gradual change would have made me apperciate weak mike much more)

-New crap characters (Vincent, the tom replacement and Mikes daughter were just boring characters that i had seen before in other films.

-Bad Villians (Don atabelo had nothing on Barzini and Roth).

-stupid scenes (helicopter and GLASSES)

And as people said before the plot holes.