Provide the ability for users to designate a voltage offset value to calibrate the voltage to a locally measured value. Example: Sense device reports 125v, but measurements with multiple other trusted devices measure 119.5. User would designate -5.5v as a calibration offset.
Sense apps would use this offset to calculate the wattage more accurately (live displays, historical reports and graphs). Raw sense data would remain unchanged (therefore no need to start over with device detection, etc), but this value would simply make the displayed/reported data more accurate. Of course, all the reporting apps would need to be modified to be aware of this offset…but that would be just a 1-time effort.
Requesting this because my Sense monitor overstates the voltage and also the wattage and kWh values. This seems like a relatively simple way to resolve it without costly hardware changes and without the need to start monitoring/discovering from scratch.