Different servers can be a lot of fun, each server having it's particularities, older and newer servers having different pros and cons (such as older servers having more crowded training spots, but lower prices) also the community is greatly reduced so it's actually possible to orge a name for yourself in a small server where you eventually come to know the more elite players. But, like some others mentioned, there would be problems with minigames. Solution; reduce the thoughness and reduce the amount of players needed to do it. Also, with servers larger than 2000 players, it's going to be easier to find players for minigames. But I have to agree that servers with more or less phats wouldn't be very fun. Imagine being on a server where it costs 2x than in another because of rarity? But, multiple servers would help prevent hacking, or atleast discourage it, since money and items collected are of no use if they are not on the server of the character you play with.