Lets say I have 80 islands in my inventory and I'd really like to keep track of which set they are from. I don't want to click on 75 drop down menus to say that 25 of them are from revised and so on. A single text field that took a number would be very useful for mass assigning sets to the cards.

I believe this enhancement accomplishes the same for the user, but in a better, more universal way: http://deckbox.org/forum/viewtopic.php?pid=8931#p8931