Independent Pure Cabinet

For those like me who use the output monitor with a "standard service monitor" chartered by the music service or finded in the "local pub"

99% of these monitors are too harsh: I think setting some pure cabinet ONLY in monitor output (and NOT in main output to PA) sounds really better.
It is convenient for use the monitor on the local stage and leave home some weight...

So I would like to choose where set "pure cabinet" with a simple flag... I think it's a simple and useful software mod.

Thanks!