Keep their heads above the slime might be easy enough.
1. They are keeping the original characters, where EGB failed. No Peter, Ray, and Winston, and you don't really have Ghostbusters.
2. They are basing the look on the movie, which is what caused everyone to fall in love with the GB's to begin with.
3. Word of mouth and advertising. With a comic book it will be harder, because you can do commercials for cartoons on TV. The comics will HAVE to be exquisite, faithful to the GB fans, and have good stories to make it nowadays. That's what will get the word-of-mouth rolling. Besides a few magazines, other comics, and comic book stores, I'm unsure what other possibilities there are for advertising–but it seems limited. (?)
4. I've contacted an acquaintance who works at Palisades that's currently making the greatly-detailed Muppets action figures and asked them to check out the press-release, because I don't want just ANYBODY making the figures if they get made. I think that GOOD, well-articulated figures with useable accessories would be good.
5. Maintain a continuity in products and how they look, keeping the look of the comics consistent with what's produced for sale.