Agreed - I kind of put that out there for arguments sake.
You don't need to have to been an experienced criminal in order to become a judge, you just need to know the law.
No - the VAR should be run by people with no football knowledge whatsoever. The VAR should not be making subjective decisions, so all it needs is someone (or something) with a complete knowledge of the rule book and the ability to apply them on a scientific basis.