I have started work on a new user interface for the ROV which will be hosted on the Raspberry Pi itself. For lack of a better name I am calling it Poseidon after the god of the sea. Initially, this is not designed as a replacement for QGC but more of a supplemental UI for doing some basic configuration and system health checks. I am very early in the build and just have simple things like checking the Pi CPU usage right now, but big plans for the future.
I welcome anyone else who would be interested in joining the development or if you just have ideas to share.
You can check out the current source code (again its early) on github: https://github.com/bwmcclai/Poseidon_UI/
I also have a gitter.im for project specific chatter: https://gitter.im/Poseidon_UI