Did a light search without finding anything on this, so here goes:
Please, please, make mobs not aggro immediately after spawning. XI had a timer before they would aggro giving you just enough time to move out of harm's way, why can't this be implemented on XIV? It doesn't seem very logical to warn the player of an aggro'ing mob via an icon by its head when you don't give the player a chance to see it and get out of the way.