Originally Posted by Volwark
Your party members consist of other players, and they can do missions and quests with you. You just won't see them in the cut scenes, cause they will have their own.
You can change your jobs in towns, and do the story on any job you choose. Of course some jobs will be more optimal for some situations than others. You can't just come as a White Mage to something hoping to whup some ass. Your role would be to heal your other party members.
Think of it this way. Say in Tactics you have a character named Joe. Joe has all the jobs unlocked. In some fights, you may want to use Joe's Lancer (dragoon in FFXI). In others, you may want to use his Ninja. Same thing goes for FFXI. You can basically change jobs at will for your own character.
Ok that makes sense. I still probably will skip XI but I may take a stab at XIV. Even though supposedly there is another XIII game coming out (Final Fantasy XIII Versus is the title apparently)