Topic: Sideboard Idea
I was thinking it'd be really cool if there was a way to keep track of sideboard plans for different matchups. Currently, you could just make different decks that use the same 75, but if there was a way to create "sub-decks" of a maindeck that allowed you to see how you'd sideboard, it'd be a little easier.
Either a drag-and-drop type interface or just changing quantities as you do for current deckbuilding would work.
Obviously not a huge priority, I'm sure, but I figured it couldn't hurt to post the idea.