Yessah! I can't imagine whether or not this would truly be possible in the editor - you have the insight on that.
But I would love to see the option to create titles that are animated along with the static images.
For instance. Say you have a tilemap made up of walls and doors. Suppose one door tile actually was animated to swing open...combined with the custom collision polygon for each tile, it would be "easy" to create interactive tiles! Trees and grass that sway in the wind, torches that flicker in low light (just as lighting effects...but not water!), water with gentle waves...the list goes on.
What's the possibility that this could be a reality? :)
Thank you for any consideration...I know your to-do list is HUGE.