I was thinking guildleves could use some spicing up, especially for players doing tons of them at a time. What if something could randomly happen while you were on duty? Given the current state of Eorzea, having Garleans "invade" your leve sounds like a start. These enemies would either have to be avoided or could be killed for a exp reward bonus. Maybe even rarer than that would be NMs and such. You could also have friendlier events I suppose, like Urianger or some other important NPC popping up and buffing you.