Well, I mean aren't the kids technically a rumor at this point?
I'm sure once that's solidified and the new actors are announced, they'll have a lot of attention on them. To me it already feels like the roles of the original characters are going to be a bit mystery boxed here. My hunch is what we get will be a combination of Ghostbusters 3 and something that plants the seeds for the future of the franchise. I think something like that could be a lot of fun.
I can totally see how this would sting for Leslie, and I feel for her. But, I mean what else are they supposed to do? The alternatives here are try to force a sequel to a financially unsuccessful film or just do nothing with the franchise. Yeah, there's a third option of trying to interdimensionally multi-verse it, but really even if they did that you'd probably still get plenty of hot takes about how it's insulting to the female cast that they're now no longer the stars. It's a minefield no matter what you do. And honestly, What if Reitman would prefer to tell a smaller story than some huge ensemble multi-verse extravaganza? There are perfectly understandable reasons, both from a filmmaking and business perspective, for going this route. It's cleaner, and Aykroyd has been trying to get this project off the ground for literally decades.
Again, it sucks that there is a narrative to spin here if you want to find one, but there are harsh realities to the film industry. If your movie is aiming to relaunch a franchise and goes over budget and doesn't make money, it's a problem. Just look at Superman Returns.