I don't know if anybody created a similar topic before.
A game moderator could create tournaments once a week, a set time and a set number of maps. Every detail would be written down (password etc.) on this website. It could also be knock-out stages. 1st round 8 players, 2nd round 6 players, 3rd round 4 players and a final. A reward of some kind would be good, maybe Vortex Shards, Warcoins or huge EXP:
1st Place: 100 Vortex Shards / 10 Warcoins and 500 EXP.
2nd Place: 50 Vortex Shards / 5 Warcoins and 350 EXP.
3rd Place: 30 Vortex Shards / 3 Warcoins and 250 EXP.