Would be nice if there was a grouping function that worked as follows:
1. Select several elements.
2. Right-click on any of the selected elements.
3. Choose "Group".
4. Select one of the grouped elements.
5. Move the element.
The result is that all other elements should move the same amount (in the same direction) as the single element. This would, for example, allow shifting several elements at the same time, without having to reselect them all the time.