Moranis wasn't prepared to come back to Ghostbusters even if Bill Murray and Harold Ramis had been involved. I doubt he'll come back for this.
A shame. He's an extremely talented comic actor. No Dark Helmet = no Spaceballs. I saw Mel Brooks on Bill Maher two weeks ago. Man, he's getting old.
While we're at it, who should be the new Maug, half man, half dog, he's his own best friend. No more John Candy. John Goodman?
Okay, but what if Spaceballs 2 was instead a parody of the sequel SW trilogy this time? (I would've gone with the prequels, but I feel like that horse was beaten into glue by the time Red Letter Media did their first prequel review 15 years ago)
I think having Adam Driver play the parody Kylo Ren would be great. He's already shown he isn't afraid to parody his role with those SNL Undercover Boss skits.
Meanwhile, Bill Pulman these days could pull off "Old Han" OR Palpatine. Not that Spaceballs had Palps. He could be the new Spaceball President though.