if you want to see charts, then look at
http://www.kokam.com/english/product/battery_main.html
Kokam make the cells for the Orion packs. i have not examined the list in detail to see which cell they use, but as you can see, the range is wide. Polymer cell tooling is far more flexible than for cylinrical cells so the cost for tooling a special size is thousands of dollars rather than hundreds of thousands. I suspect Kokam use two cells or maybe four in the orion packs, depending how thick they can go with their lamination process. Jimmy and I did discuss me taking one of his packs apart for testing but we never got around to it!
I set x/y/z dimension for the cells would be a good start when talking about setting a standard.
Neil