"I’ve got a story in line,” Feig tells Empire of a potential next outing for the now fully-fledged ‘busters. It's one that may even take Erin (Kristen Wiig), Patty (Leslie Jones), Abby (Melissa McCarthy) and Jillian (Kate McKinnon) out of the Big Apple, in a franchise-first spot of long-distance parapsychology. "I might go to some other places too,” hints the movie’s director and co-writer.
"I’ve always steered clear of doing sequels just because I always liked to do new stuff,” continues Feig, "but this world is so rich and this cast is so great [that] I’d be open to it. There’s so much stuff that can be done.”
http://www.empireonline.com/movies/news/ghostbusters-sequel-may-leave-new-york/
It's something that should be done, in my opinion. Let the Ghostbusters go to other countries. Ghostbusters International! I'd love to see them go to Romania for example and take on a Carpathian in an old castle.