One feature I would love this site to have is the ability to keep an inventory of all the cards I have, including the edition and if it's foil or not. Then you could track what cards are in what decks and which are not being used, and of course the total value of your collection. I wanted to build something like this myself, but this site is already has the framework for it with all the other awesome features it has. Do you guys think this is something that could be added?