Those three are undoubtedly in. I'm very disappointed Rick doesn't want to work anymore, but that's his choice. We're going to have to have a "Pass the torch" movie, though. That's what the original actors want, that's what the writers want, that's what we're going to get. I don't see a movie where the older actors are in the same capacity they were 30 years ago. Indiana Jones tried it and failed on that level, even lampshading the concept of the film series being picked up by his son. Passing the torch is hardly even a new concept. Extreme Ghostbusters did it. Even Filmation did it with their Ghost Busters, a decade before EGB. If done right, I can see that working. Besides, if anything else, changing it up doesn't put the movie at risk of being a remake of Ghostbusters, or even Ghostbusters 2, which was quite a deal of "getting the gang back together." A GB 3 would be that without a new class. What I want to see is a plotline where the Ghostbusters were in business all this time, but are getting increasingly (as Murtaugh of Lethal Weapon said) too old for this [stuff]. The big break up before GB2 worked more or less, but I like how it completely contradicted the cartoon where they were ALWAYS in business. The movies refuse the cartoons ever exist, while the cartoon took everything that happened in the movies into canon. The nerve of GB2, right?