It would be cool to have some sort of history of the changes that have been made to a deck. Just something like "you added this many copies of this card and removed these cards at this time and date."

It would make things a little more convenient when you are tweaking decks.

This is a pretty cool idea, that we would like to implement.

+1

Right now to track major changes in the deck I copy and and add a "v1" or a "v2" to the deck name.