David,
Doesn't exist yet. Programming features are nothing new to the Marantz line (backward and forward jumps, jumps w/i a macro, ability to turn the macro and device menu off, etc). Hardware wise, obviously you can program the cursor and additional hard buttons (except the home key) and the mute button is on the bottom, the volume keys are the top two and the channel keys are in the middle (reversed from previous models).
Jim L