I've decided to call the project "playmat." Let me know if you have a better idea for a name. Here's how it works: You'll create an account separate from your deckbox account and will then be able to join/create game. The account is so statistics, preferences, history, etc. can be associated with each person. Like W/L record for each deck you play with. I think the first release will be pretty useless. It will essentially be a virtual table. All it will know is the location of cards: What's in your hand, what's in your graveyard, what's in your library, what's on the table and so on. When you use this thing, you'll have to know how to play the game. You choose when to draw a card, when to discard, how conflict works, etc. This isn't a video game. You can cheat like crazy. Want to draw your entire library? No problem. Want to cast your entire graveyard for no mana? OK, you can do that. You have to track your life total, where your cards should be on the battlefield, and what your opponent is doing. A small chat window will let you talk with your opponent, and will report each public action you take, so if you do cheat, he/she can send some swear words your way.
So what's the benefit? Not dealing with physical cards at all. Your deckbox decks are all public information. For example, my 1-UP deck is public to the world as Set # 271790. Anyone, anywhere can go to deckbox.org/sets/271790 and see it. If you want to play with 1-UP, just copy and paste "271790" into Playmat and it will load all the cards for your use. Want to play with a random deck you found on deckbox that doesn't belong to you? No problem. Want to play a burn deck with 20 Black Lotus cards for mana? Create it on deckbox and playmat will let you do that instantly. Playmat shuffles, puts the cards on the table and lets you have at it.
Once this base application is in place, it can become something bigger and better and I'd like to hear your ideas on what that could be.