I would be very much willing to run this. I would also be very willing to create software to pair up for each round and post standings. Here is how I would think it should be run:
I definitely think that it should be a one continuous tournament instead of spreading it out. Almost every sort of tournament that I've seen spread out had 50%+ of the people just disappear after a round or two and make it miserable for anyone who has lost a round or two.
As well, I feel that either the tournament organizer should give a group their kingdom cards or every group in the round is playing the same ones, so that people don't 'accidentally' decline with cards they aren't the best with. This should be testing how good each player is with any sort of group.
I personally like 3 player the best of any player number for dominion, but I understand that takes much longer to run, so I won't push it (however, this makes it possible to have a top 6 than top 2).
For anyone who has played mtg before, it should be run as a swiss tournament (up to 8 players - 3 rounds, up to 16 players - 4, up to 32- 5. 33+ - 6 rounds).
I think points should be: winner gets 3, ties get 2, losses get 1. Tie breaks in case of same score should be based on opponent game win percentage. Every round, everyone is paired with someone with the same (or as close as possible) record as them, as long as they haven't played before. Since no round should take longer than 20mins, even with 64 people it would be over in 2 hours.
When would people, if at all, be interested? and thoughts?