I suggest that it would be nice to have a “Make Up” switch and control, for automatic gain makeup that is controlled by the compression circuitry. I believe I mentioned the SSL G Bus Compressor as an example.
It has such a control as well as many other 3rd party software and hardware units. Many guitar compression pedals also have that feature built in that raises the softer signal levels up to lessen the dynamic range of the overall signal up to a nominal gain closer to the average RMS value of the complete frequency range of the processed signal.
That is the best way I can describe it. This was just a suggestion to make the F6 even more versatile.