I'm currently doing the back-trapdoor adapter board, and encountered a pleasant surprise that's almost too good to be true. Please check the attached picture - it shows an interruption in that little plastic bar. My DVI-output board will be in that exact position, and one of the pins of the DVI connector requires exactly the space that has been freed with that interruption.
I have three A1200 case revisions, and all of them have this cut-out in the plastic bar. Is there any case revision out there that does NOT have this?