[Newworlds]

Not sure exactly what you are looking for but I would recommend Ateraan at or Threshold at and here is why:

Both are large worlds with intense enforced roleplay.
Both have unique guilds and races.
Both are well coded and have substantial player bases.

I'm unsure about Threshold but I believe maps are available for both on the website or in the game itself. However, unlike Aardwolf, in order to maintain the playability and enjoyment of the player with strict roleplay, both have rules on areas, guilds, and gear. In other words, you won't find detailed (D&D like) manuals on the weapons, armour, guilds, etc. This is so you can find out as the player how items work and how to quest and adventure.

Specific benefits of Ateraan:
2 starting areas for the beginner and the expert roleplayer.
Unique shipping with combat at sea and deep sea fishing.
Player run caravans, theatrical events, and invasions that are AI and staff controlled.
Both permadeath and resurrected death dependant on your roleplay and where you start.

Specific benefits of Threshold:
Incredible detailed Religions.
Numerious, robust quests.
Detailed, richly written massive world.
Unique races and guilds.

Either game is very fun and can give you years of rich, intensive roleplay.

Perhaps try them both!

Enjoy!