Like the title says, it would be nice if we could temporarily enable the alternative orbit mode by holding down a modifier key/keys.
Personally I would have chosen Shift+Ctrl+MiddleButtonSwipe for this, but that's currently used for smooth zooming:
- Shift+MiddleButtonSwipe - Default orbit
- Shift+Ctrl+MiddleButtonSwipe - Alternative orbit
- Ctrl+MiddleButtonSwipe - Smooth zoom
I realise other users may have better uses for modifier keys, but if anyone likes my suggestion please vote, thank you 🙂