"I think they should do one where they find out where Carol Brady is," Henderson told ET at the 70th anniversary of the TV Academy on Thursday. "Her husband passed away. Is she dating? Is she part of the scene? I say she is."
Henderson's former co-star, Christopher Knight, piggybacked on the concept.
"Maybe all the Brady kids have to move back home, because of failed marriages and unemployment," Knight, who played middle son Peter on the series, said.
Contrarily, Happy Days star Marion Ross seems to think her show ended with just the right amount of episodes.
"I just hope the actress who plays me understands you can't play [Chrissy] stupid. She was literal," Somers said. "If you play it stupid, she'll be unlikable, so I hope they get a really great actress."
All of TV's most recognizable faces of yesteryear came out for the TV Academy event, which marked the opening of the new Saban Media Center in addition to honoring ABC, CBS, Fox and NBC with the Hall of Fame Cornerstone Award for the networks' historic vision.