I typically use IPN files to make an exploded view of an assembly, while I can usually show what I want it is quite difficult and time consuming. After 6 years of use IPN files could really use some love, some improvements could be:
1. Ability to right click a part or assembly and select all occurances.
2. Drag and highlight all the parts or assemblies you want to move in the model window.
3. Would be helpful if selecting part / assembly priority actually worked when selecting objects, seems to select parts no matter what while in the tweak component dialog and clicking items in the window (not browser).
4. Make it possible to duplicate a Translate, we could then remove some items from the Translate.