following a question about this subject:
http://community.fantasyflightgames.com/index.php?/topic/93154-over-powered-decks/page-3
Here a description of the last French tournament : Each player must come with mono-sphere deck (to prevent that the players come with the same sphere the players must say on which sphere they want to play on the french forum).
We played with three scenario of GNK2. We change teams between each scenario. We made a pairing so that the players does not meet twice (only two players meet twice).
Each game was limited to 1:45. If the players win, they scored 5 points. The first winner team had 2 points bonus. Second team 1 point and third 0.5 points.
The losers must note the number of rounds and the stage if players have lost all their games.
The players were satisfied with the format. The photos of the meeting :
http://sdajce.forumactif.org/t2324p20-jeu-organise-gnk-session-n2
For more strategy, I would like that we make team of two or three players, but if there are no FAQ for Over powered decks, we do not plan to pass to this format as long as FAQ will not correct the problem.
Sorry for my bad english.