Sadly with the current state of the server, most tournaments dont reach the current requirement of 12 players and therefor not rewarding the winner with a prize. Personally I have had this happen a few times already
If thats the case, the playerbase of those tournaments will just decrease even further because participating has no incentive.
A fix for this would be to set those minimum requirements individually, depending on the mode played. For less popular modes like Dogfighting and PvP its lower, for popular modes like Sumo or Races it can be higher.
Another fix would be just reopening the EU server again.