As much as I appreciate MCH music and think that an MQA version would be great, I would not want it to interfere with the dreadfully slow roll-out of regular (mono and stereo) MQA. Let's give MQA a chance to get a foothold before wishing for too much else.
Although I have had a number of conversations with Meridian about a future 861v9 and multichannel MQA/EQ/streaming, the impression I get is that their position is much like yours.
I have no interest in MQA without multichannel. I will sit on the side listening to multichannel DSD256 and DXD while I wait for the future.