In Preform, currently, when you rotate the view, it rotates around the selected objects center i believe.
A handy behavior would be, if you rotate with your mouse outside of the highlighted object, it performs as it is now,
BUT,
if you rotate with your mouse over any part of the highlighted model, that point becomes the cameras rotation pivot.
This would be quite useful when inspecting supports to make sure they are in contact, specially when zooming in, currently, its very difficult to to rotate around specific supports for inspection.