Hey, love the site - definitely going to be very useful for me going forward.

One thing I was thinking about was the possibility of having different views for your inventory - right now it's 'all cards owned'. It'd be really useful to get views like 'all cards in decks' or even 'all cards not in decks'.

Not sure how much load this would put on the backend DB, but it'd be very useful if possible. I personally prefer to keep my decks and trades as completely separate things from my general collection, and this would help a ton in my organization.

I agree, it would be especially useful when making decks to be able to add the filter "non in deck X" so that you can pick from the pool of cards you still have available to add to a deck you are building.

Interesting idea. I'm considering this in relation to the filters / inventory subsets feature that i'm implementing next (http://deckbox.org/forum/viewtopic.php?id=67)