Was thinking a 2v2 tournament, would be more fun than 1v1, would maybe get more entrants also?
Another idea would be repeating what we did as a guild a few years ago(3v3 teamfights in dungeons), only involving as many guilds/players as possible.
Most fun way would probably be to organise a few of the best players as 'captains', who then have to pick people for their team, but not being allowed to pick people from thier own guilds for the first pick at least. Might be a nice way to get to know different people, experience playing alongside people you normally fight against, etc..
Was a lot of fun last time, we had 4 groups of 3 people, with mass fights in Shame, Covetous and Deceit:
