Spy/Stealth missions. The Garlean empire becomes an accessable area with mobs that are insanely high levels, too high even for a full party. You have to sneak past multiple mobs, sometimes having to have someone sacrifice themselves to distract them perhaps, in order to reach enemy territory encampments and steal things from them and then return (these areas, of course, would be outside of Aetheryte range). Typically only about four of a team of eight would make it back alive as all others would have had to cause distractions and diiiiiiieeeeeeee.