Just don’t see how it would work, as it’s still a ‘human’ making the final call and that human right now is a substandard ref.
Take the Matty Cash handball last year - on field ref doesn’t give it. Ralph uses one of our ‘reviews’ to challenge it, it’s a blatant clear and obvious error but the VAR ref (shock horror, it’s Mike Dean) still doesn’t give it.
Review lost, still the wrong decision, problem remains.