I want a One Piece MMORPG, where you can travel the whole One Piece world from West Blue to North Blue to The Grand Line. You can choose to be either a captain or a member of a crew. To make a crew you have to do a lot of quests, while on the other hand joining another crew and becoming a member would be as simple as just asking for the captain's permission.
There are 4 Yonkos, which means the four strongest crews on the server. This applies to the seven Warlords as well, where 7 users on each server are one.
You can also decide if you want to be a marine or pirate, and being a soldier in the WG means ranking only, where you start on the lowest rank and work yourself to the top... but you can't get and unavailable rank. With Unavailable rank I mean like the 3 Admirals, where only 3 users on the servers can have this rank.
This is my dream game, but the possibility of someone making it is so close to zero that it should be impossible.