From the poll, it sounds like you've got some pretty good ideas. I think that Vincent should end up in jail in the end with the whole empire crumbling. The government was much more serious about cracking down on organized crime during Vincent's time. It would be much harder for him to maintain such a massive illegal empire. Also, all of Michael's old people should turn on Vincent. Vincent has to be messing things up and they just don't trust him anymore. (Sorry, I've never been a big Vincent fan.) Oh... and Fredo should come back as a ghost and start haunting the house.