I have found the 3D viewer quite useful. On my first board it saved me from having 3 terminal block connectors the wrong way round.
It's worked fine for my last 3 boards apart from some components not appearing to have 3D models.
My latest board though bares no resemblance the footprints in the board layout.
Some of the capacitors are way way bigger than their footprints.
So, incorrect models for these capacitors?