Here's a better idea that would knock the fiddles right on the head:
All aircraft on all registers should be made to fit or activate the sensors that can present an actual auw readout on the flight deck.
I remember them being discussed or offered some fifteen to twenty years ago, but no company wanted them as the calculated weight is always better, commercially, than the real one!
We have all, at some time, juggled the figures to complete a flight, trusting perhaps too much on the scribbled numbers on a load chit thrust at us just before push back.
If all companies on all registers had them fitted, the oft mentioned playing field would still be level!