A tournament where you bring a complete deck you're tired of playing, trade it in for a random deck someone else brought, and then play with your new deck.

In theory you could also have meetups like this with no tournament. Just collect all the decks and then give them back out randomly, like Pokemon's Wonder Trade.

These seem like great ways to get more mileage out of decks and saving everyone some $$.

I like the idea.

it will be interesting to see how attached people get to their decks and wether or not people bother with sleeving decks.