There is nothing stopping them from making FFXI-2 as their next MMORPG except themselves. SE has proven they have a short attention span for MMOs. I doubt that will improve for a FFXI-2. They will go new, all the way. It'd be easier for a person to pass through the eye of needle than for SE to swallow spending money and resources on another vana'diel adventure. You would need their employees to develop the game on the side in their spare time, for free, with maybe a promise to be allowed to cash in on their work when the game went live. That's basically the only way FFXI-2 will ever happen :x It'd probably take 12 years to make.

*shrug* I don't know. They are doing VII remake. They might do a XI-2 but I can guarantee you it'd be so different that you'd hardly recognize it. They'll probably start with the far east and expand from there with references to the zones in XI. We'd probably never get to see them. They may as well do something entirely new for the next MMO, but more like XI and less like the disaster XIV is. If you combine the best elements in both games it'd make for an epic masterpiece, and by best elements I mean XIV's crafting and then everything else FFXI ._.