A lot of the iPhone settings could be considered for "power users". There's a setting to tell the phone what to do when the home button is pressed; there's one

A lot of the iPhone settings could be considered for "power users". There's a setting to tell the phone what to do when the home button is pressed; there's one to turn on Caps Lock, Shake to Shuffle, change the Photos' slideshow transition... they aren't unreconicilably technical, but they're subtle tweaks to functionality that power users would enjoy most.