FFXI is over 10 years old now. A lot of games do not even get support this for this long. Sega pulled the plug on many of their phantasy star online games only a couple of years after they are out for example, The old Star Wars mmo is getting shut down in favor of the new one the old republic. SE could of done the same thing when they released 14 but they didn't.

A full expansion is just probably out of the question due to the number of people that play FFXI now. Yes it would be a hassle to even release it on PS2 because they don't even make PS2 games and that thing is out of hdd space. Seeing as so many people on fairly crowded servers it seems people are happy grinding all the jobs to 95 in abyssea now.