For instance, we now know that players may specialize into four differing job branches however they see fit, also known as forging a Discipline. The four are: Disciple of War, Disciple of Magic, Disciple of Land and Disciple of Hand, which correlate to melee combat, magic combat, gathering crafting materials and crafting, respectively.
Then there's Guildleves, which is a way for players to tailor a quest to their party makeup, whether that be themselves or a larger group of differing job types. If players attempt a riskier Guildleves, the reward is also improved as well. So it would seem that, interestingly enough, Final Fantasy XIV may be looking to attract people looking for all sorts of difficulty in their MMO.