I contacted Connectix regarding Nuendo SpaceMouse support.
I think SpaceMouse compact could be perfect to navigate Dolby Atmos.
Conmnectix replied saying :
"Thank you for contacting 3Dconneixon Support.
We offer developers access to our SDK, which will allow them to add support for our devices. Or developers can create their own 3D input.
If you do not see the software you want to use in our software list, you can fill out this Feedback Form to help possibly get the software supported.
Keep in mind it is up to the individual developer to decide to support 3D input.