One of the contributors states: "Building an extension for this should be very simple." Why on earth isn't there just a generic keyboard-shortcut preference where I can control every possible browser action and its associated keyboard shortcut? In fact, why isn't this available at an OS level? Surely it would remove a lot of unnecessary duplicate code.
"Why on earth isn't there just a generic keyboard-shortcut preference where I can control every possible browser action and its associated keyboard shortcut? In fact, why isn't this available at an OS level?" There is one, on KDE level. Any KDE app has generic-looking hotkey remapper under settings menu. It just works.
System Preferences -> Keyboard -> Keyboard Shortcuts -> Application Shortcuts -> [+]