I'm not a huge fan of 75%, but I AM a huge fan of Duck and would probably be unable to resist.
As far as input goes, I don't feel that I am worthy, nor have the creativity to provide any useful information. I think the Lightsaver bottom LED is extremely cool and can't wait to get my hands on a Viper for that very reason. That being said, I'll give it a shot.
If it would be possible to have a rectangular cutout across the back where an acrylic piece could be inserted could allow for an under-mounted LED to light up the back would be very, very interesting. Could jack up the production costs through the roof, but all that is above my pay grade. Etch the acrylic insert with Duck75 GH Edition.