1. To be eligible for the final reward, the player has to speak to an npc to register for a server.
2. If the player transfers, he loses his registration and cannot register again for the rest of the season.
3. The player must meet some form of minimum activity requirement or lose his registration for that season. (we can discuss what constitutes activity worthy of receiving the reward i guess.)
I think this is probably the ideal system that anet should implement. I don’t think there’s many ways to abuse this.
As a final point, if we want to balance the servers out more, then an additional feature:
4. All servers will receive rewards at the end of the season, proportional to their final rank. However, the rewards are divided evenly between registered players. A player on a low population server that comes 4th may get a much larger prize than someone on a high pop server that comes first. Servers that achieve success in spite of their low registered population will be the most rewarding, even if they don’t win.
Registered number of players is published for each server.

