There have been a number of suggestions in the past for AR (augmented reality).
Now that AR works fantastically well for iPad and iPhone and Apple has an easy development kit, may I suggest that it would be REALLY GREAT to have this in the iOS Fusion360 app. ?
Anything that helps us get a better perception of our models and how they fit into an existing environment has to be a good thing. And the ability to "move into" models would solve the lack of an Inspect / Cross Section feature in the touch interface.