Silver Supporting Member
yes that percussive aspect is really nice. I've found the guitar can be used that way too...but with piano its so literal (striking the keys).I do use the keys, but more for the type of input it provides, more percussive.
What comes to mind with that is Stevie Wonder's playing on some iconic tunes like Superstition.
Also György Ligeti - he was into africian polyrhythms and also extending that to piano. Some of his etudes are like that for example.
As far as extending that to guitar one player that comes to mind is miles okazaki. One of his albums is dedicated to rhythm (Mirror 2006)