Just a follow-up regarding the RX-AxA series of AVRs...
The 'Yamaha RX-A3010 IP v1.2' module seems to work fine...
BUT
It does not have the commands for the HDMI inputs. The previous generation of the AVRs used the 'AV1 thru AV7' input commands for the HDMI, but now the HDMI inputs are dedicated with the AVx inputs relegated for Component/Composite inputs (when/if available)
You can alter the strings by changing the 'AVx' to 'HDMIx' and that seems to work fine...