I'm not sure you understand how limiting it is to be tied down to previous iterations of games in the creative process. FFXI, just like FFXIV succeeding it, tried very hard to "Be its own game". It is not just "The Eleventh Final Fantasy", it is "Final Fantasy XI, the MMO".

Do you have any idea how demoralizing it is to go into a project with a grand vision, only to have that vision scorned because it was different from some other guy's vision 10 years ago? The Final Fantasy series has never been a cohesive, sequential unit. Final Fantasy XI shared its title with its predecessors, nothing more. In-game terminology was designed in such a way that it would be familiar to fans of the series, but that did not mean that the game was designed to be similar to previous iterations of the franchise.

What Red Mage or Warrior or Time mage was able to do in FFMCLVIII doesn't mean jack shit in the context of FFXI. Each game is its own entity. If you want a CloneMO, go use RPGmaker or something and build your own.