I would love to play in a Forgotten Realms setting, complete with the Underdark and (of course) the iconic Sword Coast. Episodic releases are my preferred method, with custom content being top priority for me (that was a tough decision though).

Indeed, episodic content rules all as long as it is kept coming, which it is if the creator is dedicated enough. If not it just fails.

I would love to see a new province of Tamriel. Ideally, I should be able to ride just across the border, like you can do with the Elsweyr-mod. It's not that important which province, but I wouldn't mind seeing Summerset Isle. To me, having it done properly with detailed places, interesting NPCs and good quests are more important than the size - as long as the size is somewhat relevant to being an entire province.

I think Tamriel is popular because of its vast content and the wealth of mods etc that are being created for it. People know it because they play it continuously, and grow to enjoy it because their characters are embedded in it. As Middle Earth, Mesogea and the other totally different worlds develop and peoples characters get a toe hold in them, players will become more diverse in their opinions. At present we have a huge choice and variety in Tamriel and a number of new worlds etc in progress. I would hate to see people abandon anything that isnt Tamriel based as the the game engine has enormous opportunity to move into new worlds and places, even the historic.