I have a SpaceNav from 3DConnexion, which I use with Google Earth quite well.

I know you support Playstation/Xbox controllers, but those don't pair well with Macs.

Is there any possibility of including support for 3D controllers like the SpaceNav?

Here's an Open Sound Control driver which may work: https://github.com/eLandon/spacenavOSC

Let me know if that's something that would be possible to look into.