Hopefully 9 is the lowest priority, if not disregard and change to 1.
Was wondering how difficult it would be to take existing inventory and apply deck lists from the Internet to see if you have the cards to make the deck. A window where you copy/paste lists from sites and it cross references against what you have and tells you whether you have the cards to make the deck or not. I haven't found any other software that does this or anything like it, but I did find a bunch of requests for it. Just an idea.
The date sorting thing you added worked brilliantly for my needs... I appreciate it very much.