From chat before the last toruney, posting it here so more can see it:
Fippe94: This reminds me of a suggestion I thought of: If there are less than 16 players, run the tourney anyway, but with half rewards (only rewards to 1,2,3 and those rewards should be the current 2,4,6 rewards)
Rewards could of course be the current 1,3,5 prizes too or something else, but less participants = less rewards, since I guess that having 6 prizes is one of the resons we have the >= 16 players rule. (Don't want it to get too easy to get a prize)
So my suggestion is to do this when we have 8-16 players, so that the players who actually show up still have a chance to play, and we have had several tourneys been canceled because of too few participants.