Sounds like a great idea.
Good start would be taking very high-res photo scans of the tops and bottoms of each board type.
Even better is x-ray scans of the inner layers.
We did some but so far only on the first version, but nothing worthwhile to share yet until there is TX product ready for one, going to be long while still, but slowly in the background inch by inch things are happening.
In the meantime, would love to see the photos of the various boards and maybe a list of major changes between each one, and I am sure others would love some eye-candy to browse thru for now, while things are slow.