Wouldn't it be nice if there was only one altimeter setting... You could call it 'altimeter setting'

All the terrain on the chart including the airport elevation would match the altimeter. All airspace delineations would match the altimeter at all times. Every plane of interest would be on the same setting, and would be individually responsible for keeping their altimeter accurate using widespread sources of airborne aeronautical data. Eventually you'd have a difficult time finding a pilot who would know what Q-this and Q-that meant, because it would be archaic nonsense.
It doesn't hurt to dream