Instrument Editor Keyboard

It’d be nice to see the keyboard in the instrument editor light up again as the song is playing and a particular instrument is selected, as in FT2. I often have to find out the note range of an instrument, and manually going through the song is way not as easy (and fun) as simply watching the keyboard play the notes. Anyone agree? I’m sure this’d be easy to implement and shouldn’t really consume much more CPU usage. So, a possibility?