It would be really handy if it was possible to select a number of objects in a scene and group them:

* This would make the Scene window easier to use when there are a lot of objects, avoiding the need for a lot of scrolling, trying to find specific objects.

* Selecting multiple objects would be a breeze because the user would just need to select the group.

* Hiding and showing a group would hide or show all of the objects in the group. For example, all of the foreground objects could be grouped, so hiding them to focus on other parts of the scene would be a lot easier.

* Adding the ability to set properties of a group would set the properties of all objects in the group.