Noted and we are looking into this. We have noticed that the 740 does not dim as much. Thanks for the feedback and we'll test some more on all devices. We are currently dimming iFly models a low as they can go, so we'd need to add more "darkening effect" if so. This introduced coloring challenges, so let us take a look and report back.
Vector Mode like "pielit" states is a great option. Sectionals and Low IFR are lighter based so more challenging to get the brightness just right. Stay tuned.