Ever since I started getting trading cards, I've been maintaining a local file with all of them listed out...just seemed like it might come in handy for searching. However, over time, it started to occur to me that there was literally nothing I could do with my local copy that I couldn't do just as well or better with Steam's own display interface. Still, I kept doing it because I didn't get new cards that often and being all organizey about it made me happy.

However, IdleMaster has ruined everything! :D Now I'm getting cards by the truckload and keeping that list up to date is actually kinda a pain. So, I mean, this question isn't technically on topic here per se, but where am I going to find better experts on this subject?

Can any of y'all think of a reason to have a local list/database of all your cards, that would benefit you (or a trading/gifting partner) in any way that you couldn't do with Steam's own interface?