First thing : yeah I know, the actual group name to refer to the z-sorting property isn't the best one. We may plan to change it. Anyway.
Some guys asked me if it was possible to assign object into group so we will be able to set up properties for this object quickly. An example :
var group:Group = new Group("filtered"):
group.filter = new Filter();
group.scaleX = 10;
It may be useful moving objects too, let say we are making a Hero with a Health Bar which is on top of it and moving with the Hero. At the moment, we will have to update the bar position into an enter frame according to hero values. And if we add an aura with particle next to the hero, it would be the same process.
Maybe using group would help to do this easily. What do you think? What would be your usage?
Some engine like Flixel uses group, if you know their type of behavior please share 😉