When working on a new item - I like to keep away from converting to components until I have finalized my design.
Frequently- I have repeating objects and being able to group them so I can just click the folder and carry on would be wonderful.
Unless I missed something - the only way to do this is convert bodies to components, in which case you lose design history (which has saved my butt a number of times by the way).
This would really be great to be able to fold items up and you don't end up with crazy-long list of objects.
-Scott