I got this done pretty quickly, for me.
Far less confusing redundancy in the design. The player collection section is no longer dizzying. I still need to finish the f00'ball and basketball player collection have lists, but otherwise, I believe this is a usable list!
Maybe someday, I'll get around to making a new trade list, too! So much easier to just go through other folks' want lists than to keep an up-to-the-minute accounting of tens of thousands of duplicate cards, though!