History or Revert feature
A revert feature would be great in this app - just to provide some recourse when experimenting with lighting and material properties etc.. Learning by trial and error I am quiting quite a lot in order to get to a previous point [ultimate would be a history like Photoshop of course!]
Claudia Barthoi commented
Yes please, a history like in Photoshop. Spares us the returning to last saved version.