piero1985
they could make the characters in CGI, as Jor-El in Superman Returns…
That ain't even nearly the same thing. For Jor-El they just used Brando's face in a few blury shots of him in the crystal and all they did was basically reanimate his mouth movement to fit with the words. Jor-El was just manipulation of already existing footage. Not to mention it was only about 45 seconds. They were really hyping that thing up(Marlon in SR) but it turned out to be nothing special really. And if they were just going to manipulate footage from the first two films like with Jor-El, then they wouldn't even need the original cast back. Just a budget exceeding 300 million which has never been done before in history. They could rotoscope their heads off of the original films, change their lip movement, and place them in a CG environment with CG bodies for their manipulated heads. And the chances of that happening would be 0.000000000001%
And if CG Ghostbusters is going to follow the same guidelines as the first two, then it'll get a PG13. There's no way they're going to have a movie about hell and it being just PG. It wouldn't come off right, there's got to be a few horror and scary elements in it.