You can actually physically reverse this logic at the hardware level without installing any software. You can make the F-keys behave like standard F-keys (great for coding or gaming) and force the multimedia icons (Volume, Brightness) to require the Fn key combination instead.

Then, the laptop whispers differently. F1 becomes a slumber screen; F2, a wireless toggle; F5, a touchpad’s pulse. Brightness climbs the arrow keys; volume rides the top row like a train.