Hi brideck,
It's good to see another variations collector here.
To answer some of your questions, you may want to see some earlier posts talking about variations, etc, but the skinny of it is that we are tracking everything you mentioned (and more) but it's a matter of filling in this information. There are (literally) hundreds of variations that we know about, but it's a matter of getting the info into the database. It's extremely time-consuming, and I've put the data-entry of variations on the back-burner temporarily so that I can finish up the collection tool.
The UPC code thing we just noticed the other day -- it shouldn't have US codes for non-US games, and we realized that our cloning tool was populating non-US games with the US UPC code. I've got that listed as a data scrub I'll be performing.
As far as the codes for the 1st-party titles... that's still up in the air. My original thinking was to preserve the games' original release information, then add variations to that. That said, any early release that came without a cart ID, then later with one, would be considered a variation on the original.
The only thing I hadn't considered yet was your suggestion about tracking company addresses. I'll definitely make a note of that!
All that said, stay tuned! The only reason the unlicensed games have so many tabulated variations vs licensed is because there was more demand to get that information up, so we did. The licensed variations data will be so detailed, it will drive a variations collector nuts (like me)
-Dain