Interesting idea for sure. I don't think it could be a firmware only change and believe some hardware changes would also have to happen. I'm pretty certain it could not happen over L6 link but could in analog after appropriate changes to circuitry and software .
The reason that the speakers divide up as woofer and midrange has to do with the difference that you get when you stand a pair of woofers up vertically instead of horizontally as would be found in a guitar cab. When the woofers are side by side the sweet spot is directly in front of the cabinet and as you get off to the sides you encounter a lot of phase cancellation and comb filtering when both drivers play the same audio. If you took that same guitar cab and turned it on its side the worst place to listen to it would be directly in front and the sweet spot would be off to the sides. By having each woofer perform a different job you minimize phase cancellation in all directions.
I figured there was some kind of a technical reason for what you guys did with the system as and everything that is done with the system very interesting stuff