Allow me to illuminate a bit more on the Ghost Murray script. It comes from something Dan Aykroyd wrote in the late nineties, around the time they were looking at actors like Chris Farley and Ben Stiller as Young 'Busters. The story, entitled Ghostbusters Hellbound or something like that, involved Venkman dying (which necessitated the new recruits) and a cross-dimensional rift that revealed a Hell that was very closely identical to our own New York City (nyuck nyuck geddit?). The climax, where Venkman returns to save the day, had them taking on some mogul demigod based on Donald Trump with a name like Lou Cypher (lol) or something. The script was so bad that Ivan Reitman didn't want to take part in it, but his recent return aboard would indicate that the script has been changed and improved by the guys from The Office or that he needs the money. Point is, that bad script is probably the last one that Sigourney read since Aykroyd and Ramis have yet to polish the latest draft. If I had to guess, I'd say there's a good chance that Venkman survives.