Another forum member posted in an ongoing MBP-R related thread that he was returning his MBP-R precisely because the display was an integral element and could not be swapped out or replaced.
The poster railed against "locked down" design ... a concern I cannot understand and do not share.
As iFixit noted, the retina display is an elegant marvel. While I don't imagine the Mac mini or iMac will be "locked down" anytime soon, that's clearly the direction the laptop line is taking.
I guess there will always be users who fancy themselves system engineers and cannot resist "screwdriver-ing" new equipment. Unfortunately for them, this particular piece of gear doesn't stand up well to such treatment.
I guess that user wants to carry around a Macintosh Portable or something.
God people will find anything to bitch about.