I noticed that the game panel and all the buttons around it (play, pause, etc) still worked fine even without the backlight LED's or the keyboard sheets (whatever you call them things O.o) plugged in so I decided I could still find a use for it. I ended up dremeling out the top piece of the keyboard and throw the rest away. Oh how I miss that keyboard... Anyways :P I ended up taking a 2x4 and routing out the shape of the main circuit board in the keyboard and cutting slots in the back of it for the two USB ports and the chord. Then, after inserting the circuit board, making sure that the USB ports and chord fit snuggly and screwing it down, I added the top 1/4" board to hide all of that stuff. I marked where the ribbon cable connecting the game panel came out on the board, cut a slit in it with the dremel (cutting disk), connected it, then screwed it down. After attatching the top board, I then drilled two holes on the game panel housing to screw it down, and attatched it.
Pretty simple process (and a horrible explanation, I know :P). It works great for me though! If you want, you could plane down the underside of the 2x4 to make it sit a little shorter, but I honestly like the extra height on it.
Well, if you have a G15 that's died on you (sorry to hear :P) then this just may be a fun project to bring at least part of it back to life ;)