I definitely agree we need a boxed Far East expansion which could probably also sneak in the Mithra homeland. As for how I'd like my endgame content? I'd like an another entirely new gameplay concept like dynamis or einherjar, that's why I like FFXI, always something new instead of just more of the same.

You know what I'd really enjoy? Something like the arena in FFVII's gold saucer. Give me round after round of brutal boss battles one after another designed for solo or small parties. Have it so we can choose between tweaking it to be customized to our choice (via MMM) or maybe offer greater rewards for taking on random enemies. Have all kinds of different optional settings too, like removing time to recover between fights, adding limitations (via salvage), or making certain types of attacks work best.