Film is a different medium than literature. If I were a casting director, I'd be laser focused on finding an actor with the chops, and let the makeup/effects guys worry about physical appearance. Have you seen Barron Harkonnen in the new Dune films?
Yeah, if they had the body shape... but The Judge is like 7 foot 280lbs. When I read it the second time I though, oh who might have that same build so I can imagine how it works.... Those big fucking wrestlers like The Big Show are the right size, except if they were bald and look like a baby/man