You mean in addition to the little arrows adjacent to the Add Keyframe diamond for each individual setting?
My guess is that since the function is tied to each indiividual setting, and there is often more than one tool that can access & create keyframes in the same object (eg PiP Designer and Keyframe Settings), there's no easy way to implement that particular keyboard function across the board.
Maybe I'm wrong and CL could make it happen, so let them know you'd like to see it via Rate Us & Provide Suggestions