@Rich-O-Brien Yes, it would be optional. IIRC, we discussed this a while ago, i.e., having the artistic freedom to do whatever you want with directional lights, so I definitely don't want to take away that freedom.
Maybe a 4th light that represent SketchUp sun or if I right click a Di-Light I can set it to SketchUp position.
This was my thinking: have a context menu on the directional light that says sync with SketchUp sun position or have a tick box in the directional light config sync from Sketchup. Then, it would track it in real-time. Option two would be the logical path to quickly support sun animations for shadow studies.