This is a fun thread! Here's a list of some actors I think would do a pretty decent job in a remake.
Grandpa Walton: Sam Waterston
Grandma Walton: Tyne Daly
John Walton: Peter Coyote
Olivia Walton: Kate Capshaw
John-Boy Walton: James Denton
Jason Walton: Dennis Christopher
Ben Walton: Chris O'Donnell
Jim Bob Walton: David Harper... There is no other Jim Bob.
Mary-Ellen Walton: Mary-Louise Parker
Erin Walton: Judy Greer
Elizabeth Walton: Jessica Chastain
Ike Godsey: Patrick Duffy
Corebeth Godsey: Jean Smart
Baldwin Sisters: Betty White and Cloris Leachman
Nice choices Nicky and who knows Betty White keeps going strong and healthy and could live to be 100 I think she's 94 or something. Anyway with the right cast a new cast Waltons movie would be great save the spoofs lol