I'd like to see that too.
I was thinking about it. At first, thinking that if you actually grew everything as big as possible, you'll pretty much just end up looking like a blob because you're ultimately limited by your skeletal structure.
Then I was thinking that the body would regulate one's waist size, simply to support increased upper body mass, so you couldn't keep the waists too thin and still get upper body size. That kind of killed my shoulder-waist-ratio thought.
But the shoulder to waist ratio IS driven by shoulder size too, so you could grow the shoulders even if your waist got thin, and still maintain a good ratio.
Calves = arms = neck seems to be limited by neck size (i.e., head size), so I don't think that would work.
But I do think we could probably establish some basic ideals via a "calf to thigh" ratio, a "forearm to upper arm" ratio, a "shoulder to waist" ratio, some way to measure the "deltoids larger than upper arm". And then for somewhat subjective criteria, looking at how well the lines flow between those different regions.
That would support both the older V-shaped ideal, as well as the newer X-shaped ideal, without promoting the blob-ideal.