Ok, I've got a file for you to test @big517. I have to say, understanding this new version of RNET is making this much easier. I've got status coming back based on any change in state, volume, or source, whether its from Vera, keypad, or remote, without having to explicitly request.
The one gotcha I have is that I don't have the exact structure for these responses. I built the updates based on my logs and analysis so I hope they hold true on the C-series.
Please test out all the buttons, I'm particularly interested in the "All On" command. Good luck!