Personally, I like the job/sub job system. FFXI was my favorite MMO of all the ones I've played.

But, the situation we are in is this:

This game is dying.

This is not the same MMO business world that it was 10 years ago. There are tons of choices for people to play. "Making something new" if fine for other MMOs, but not this one. If you want to save this game you have to appeal to the things that make your game unique in its branding, and existing fan base. This is not a console game with a predicted 100 hours of game play. This is an MMO. To reinvent yourself each time is a bad choice. The only thing that will save this game is to grab onto the things that are dear to players. Chocobos, Moogles, Airships, and (the relavent part to this thread) original FF1/FFXI classes. Final Fantasy's place in the MMO relm has been set. Don't worry about making it "X like World of Warcraft", or "Y like EQ2". Focus on the things that keep people playing, and making money. If this is not done, this game will die. It does not stand out in the current sea of MMOs, and it will be washed away and forgotten by the waves of new games (Tera, Old Republic, etc. etc.). The original design of this game was poor. It is like having The Old Republic without lightsabers. Fix it, and fix it fast or this game is over.