Great news, I've found a new drop-in replacement LCD panel replacement for the GCW, sourced from Digikey
It looks better than the stock LCD, has a much wider viewing angle, and there's no pixel inversion to speak of. This is due to the difference in LCD technology; this is an MVA panel
, comparable to IPS panels.
I've uploaded an album, the pictures speak for themselves: http://imgur.com/a/rHqjn
I do offer an LCD replacement service (among other things, check my webpage linked in my signature), but it's easy enough to replace yourself if you're careful. You do run the risk of damaging your hardware, however, so I wouldn't recommend replacing it yourself unless you have a soldering iron handy in case a wire breaks off somewhere.
No modification to the firmware is necessary.