I can pretty much guarantee that the sequel version of this movie is not a significantly bigger hit – in fact, it might have even been less of a success at the box office. When you get a Harrison Ford back in an Indiana Jones movie, for example, Harrison Ford was already a movie star all on his own, and you’re combining it with the nostalgia for the franchise. Ghostbusters “ended” as a movie franchise far sooner than many others, does not have legitimate movie stars in the same way a Harrison Ford is a movie star, and although the original movie is beloved, I don’t think there’s the sense that it was ever an ongoing thing that those people really wanted to see more of in the same way they did an Indiana Jones. If we’d gotten to Ghostbusters 3 on the initial run and it was also at least somewhat liked, then maybe, but even then that doesn’t necessarily bridge the gap.
This is the same summer that Independence Day Resurgence bombed. That movie also has a limited depth as a franchise to date (one movie), a movie which did not put viewers in a position they were demanding more, and they lost their legitimate movie star in Will Smith (and turned to Jeff Goldblum, whose level and type of celebrity is pretty similar in nature to Bill Murray). It’s a pretty perfect template of how a Ghostbusters sequel would’ve performed, except you probably don’t have Murray and you don’t have Harold Ramis. I’m afraid I can’t picture Dan Aykroyd or Ernie Hudson meaning that much more to Ghostbusters 3 as Brent Spiner and Bill Pullman meant to Independence Day Resurgence in terms of the general public, and your missing star would only have added Goldblum-level wattage to the project.
Furthermore, the ease with which one imagines a more successful sequel is even easier to undermine when you then have to go back to the drawing board of who actually gets to direct it. Reitman removed himself from the running, so in as much as his name means something to the 2016 public (I imagine less than Roland Emmerich, who at least is famous for making a certain type of disaster movie), you lose that too. So, you still have to choose from modern comedy directors. That means Seth Rogen and Evan Goldberg, Judd Apatow, Nicholas Stoller, etc., names who I do not think would be much more popular with the ■■■■■■■■ fans here than Paul Feig was. Then you gotta imagine who else gets cast in it as the new group, and so on and so forth.
The problem Sony encountered when releasing the movie this summer wasn’t that people wanted to see those old characters again. It’s that there wasn’t nearly as much widespread public passion for the series as they thought. That’s where the marketing for the new one comes in: if it had looked exciting to viewers independent of their interest in the original, then it would’ve been more successful, but that was the core hook they hung the campaign on.
The genesis of the character is that Feig and Dippold wrote a screenplay in which she served a function in relation to the other characters, Feig chose to cast Kate McKinnon in that role, and then Feig directed her to make choices that McKinnon interpreted into the character as she appears on screen.
That’s probably kind of a dismissive answer but it’s like, she’s part of the whole. She only exists in this context. Maybe you weren’t really saying that, but you can’t just pop her out of the film and put her in an imaginary one. Every factor that went into her creation would be different.