I have to admit, this is the first welcome post by someone actively looking to only lurk! 
Six has the right of it, though. Pound for pound, you're going to see the most open-world RP and events on Balmung, which is stuffed to such capacity that new characters cannot be easily created on it. He mentioned the server full of characters because the transfer cost is a one-time $18 fee to move as many characters from one server to another, and it's usually recommended that for those who might want to play multiple characters (for RP reasons, usually) to make them all on one server and move them all over at once.
... It might not be something you would be interested in as an observer, though, since you can be every class and profession on one character. However, it might still be worth creating a character or two to carry along with should you ever feel the itch to RP. Or just to make that transfer fee feel a little more worthwhile.
Six has the right of it, though. Pound for pound, you're going to see the most open-world RP and events on Balmung, which is stuffed to such capacity that new characters cannot be easily created on it. He mentioned the server full of characters because the transfer cost is a one-time $18 fee to move as many characters from one server to another, and it's usually recommended that for those who might want to play multiple characters (for RP reasons, usually) to make them all on one server and move them all over at once.
... It might not be something you would be interested in as an observer, though, since you can be every class and profession on one character. However, it might still be worth creating a character or two to carry along with should you ever feel the itch to RP. Or just to make that transfer fee feel a little more worthwhile.
~