Not sure this has been mentioned but...
SONY has filed for a universal games controller patent
which not only covers the popular Nintendo, Microsoft
and SONY products but also the Amiga CD32. The
aim is to create a touch screen LCD which would lay
out the buttons for the configurations of the various
game pads...
Rumble on an Amiga.... :-)
scuzz
http://www.commodore-amiga-retro.com
This reminds me of three things i've read about:
I saw a prototype video of an LCD touch interface that had a layer of plastic on top that could inflate in areas based on electrical current thus providing tactile response.
On hackaday.com some time ago I saw an atmega prototype device that had microswitches in 4 spots on a tiny LCD, the interface was pressing on the lcd which rocked the switches.
Can't remember the third, damn!