I'd love to help kick off a rarity only list! If anyone's looking for it, here's the link to the thread for the other one:
http://www.chickensmoothie.com/Forum/viewtopic.php?f=20&t=3452288Where we got stuck on that one was actually analyzing the data to determine if the differences we saw were "statistically significant", but as I explained on a post there, I don't think statistical significance means what some people thought it meant. (aka it doesn't mean importance)
We're also having some difficulties viewing the data, something to do with the excel filters or something. I think Solloby was going to get around to fixing that so anyone can view the data to help, but they're probably super busy so I don't know when they'll get to it. But I think we did end up collecting just about all the data that can be collected, other than the rereleases, so if we could view the data we wouldn't have to collect it again.