There were certain things that happened in XI, like walking through Lufaise Meadows and seeing Bahamut skim over a lake. Was a pretty rare thing. I wouldn't mind more things like this, kinda like what they did with the Void Ark. Seeing it appear in the Sea of Clouds and Churning Mists was really neat. I'd love more little "events" like that around the world. Some randomized enemies in dungeons would be neat, too.