Gaining access to the App Store with no unlock required through the prefPane seems a non-issue in my view as the App Store is directly accessible through the Finder.....if someone has physical access to my machine.
And any critical functionality requires a password, which reinforces your view.
The new Great Equalizer is the SEND button.
In Memory of Harv: Those who can make you believe absurdities can make you commit atrocities. ~Voltaire