Yes Pacino definatly is louder these days, but that doesn't mean that he couldn't still play a very good Mike. And his advanced age would sort of aide the GF4 split story, considering Mike would be nearing his deathbed. I personally don't mind a GF4 as long as its taken from the supposed existing script that puzo wrote. Sure i'd agree that FFC might have to make some changes to keep with the times, but i'm sure he hasn't lost all his talents just yet.