Knowing the firmware code, I wouldn’t expect a true “left half is the master” implementation in any forseeable future.
Of course, routing reports from right half to left half isn’t that difficult, but there it is a question why would anyone want to do that - double the latency, half the reliability… …the only reason that comes to mind is one more usb host connection, so it would be possible to switch between two usb-connected computers just from uhk.