First of all, I'd like to say that I think this tool is awesome :)
Regarding the rotating preview on the right of the screen, it would be great if one could:
- Snap the Rotation to 90ð or 45ð angles, to view the object from all sides (left, right, back, front etc.)
- Manually rotating the object (for example with left/right buttons that single step through each animation frame)
You can click preview to stop it - then use mouse wheel to rotate. It's undocumented and I will improve the experience as well as add buttons.
There is no SNAP yet - but you can rotate the model freely with RIGHT click.