Hi Ricki,
Glad to hear you’re loving your new CQ 🙂
The mixer channel count is governed by the core rather than the I/O you have connected to that core and the LR + 6 mono / 3 stereo outputs is what the CQ core was built for.
So no I’m afraid it’s not possible to add more mix summing/routing/processing with a firmware update, it would require different hardware.
For more mixes and a higher channel count you would be looking at a Qu or SQ.
Cheers,
Keith.