On many photo gear review sites, cutaway diagrams of lenses are featured which show the layout of the elements in each lens. Here's the style of diagram I'm talking about, taken from Nikon's website for the 800mm f/5.6 lens:
I'm curious what information can be scraped from this kind of diagram; right now, I see it as:
A handy, but superficial, proxy for how much the lens will weigh and where the CG will be (although this does also depend on the density of the glass)
An okay resource for understanding which elements may cause glare or internal reflection issues (especially when ED or similar elements are highlighted, as above)
An okay resource for understanding where light loss occurs between the front element and the sensor or film reel (although, when this would be useful isn't clear to me; I see no benefit to treating lenses as anything more than a black box in terms of light loss)
It also seems to serve as a source of non-information about:
Colour fringing (since this depends very heavily on the design, process, and QA during glass manufacturing)
... Since any sensibly-designed mass-market lens would most likely only have those attributes affected by factors that can't easily be represented in a cutaway diagram like this.
Is there any additional information that can be reliably gained by looking at this kind of diagram? Are any of my assumptions about non-information offered by this kind of diagram wrong?