SPOILERS BELOW! While he more or less did right by the overall story line, what with the tying up of the loose ends, David Chase also did the fiscally prudent thing: He kept all the doors wide open for a movie, and not just with the ending. Of course there is the pending indictment. (An 80% chance!) But did you notice Meadow’s future mother-in-law checking out the make of the Soprano’s china?…