Now that the building competition is complete, it is fair to say that it could have been organised better and run more smoothly. A major reason for the problems was the sheer number of entries, which made it very difficult for judges.
As such, here is my proposal for how to deal with future competitions. Paragraphs beginning with 'Mike' are behind the scenes. The general public wont see these parts. Paragraphs beginning 'Public' are what we actually see as a participant in the competition.
Mike First, create 16 mini worlds each containing 50 competition pros. Make sure no player pros can be added. Have it set so that when typing entry number, the player's name is NOT shown to prevent later bias. Have each pro marked on the map. Enable perma steam in each world.
Mike Announce the competition. Give very clear instructions on what should be built. Don't leave it too vague. Have a clear deadline for each phase and stick to it.
Public Head to one of the 16 worlds. Find a marked pro and claim it.
Public Build your entry!
Mike Randomize the 16 worlds. First give each world a number from 1-16. Then randomly select each number. For example you may end up with:
Now from these numbers, set it so that world 3 players are judges for world 7. World 7 players are judges for world 11, and so on. Finally, world 15 players would judge world 3.
Mike When sufficient time has passed, stop the building process. Announce the judging order.
Public Go to your designated world and vote on your favourite entries. Maximum 10 votes per player.
Mike After the voting phase is complete, take the top 4 entries from each world. Announce the 64 group winners.
Then either: Mike Split these into groups of 4 (random) with no two from the same world.
Public Vote on the 16 groups.
Mike Take the group winners and choose the ultimate winner from this list.
Or: Choose directly from the 64 to find the ultimate winner.
This will prevent collaborations, as players cannot vote for each other. It will also give every entry a much fairer chance of nomination, rather than just those with lower entry numbers.
Other suggestions for preparing each world: (From Sirentist) - insta-purify the world (sometimes machine parts are inside comp pros) - disallow all plaques/landmarks, period - disallow signs that identify the builder - enable diamond target teleporters - provide info at spawn (e.g., clarifying that judges will always arrive to the build at the green pro, so leave it accessible or enclose it and put a target tele)