The best thing to run to the plasma from the equipment location is smurf tube... wide enough to accomodate a DVI or VGA cable... or some mythical yet to come cable... old ones out... new ones in... voila'.
I've seen an amazing amount of builders put a TV alcove above a fireplace with nothing but a cable jack and a 110 outlet. The big boys even put one RG6 jumper labeled VCR up there... no way to put a DVD player or other High Def device unless you stick it next to the TV or on its side.
Wesley, these guys do need info to stop them from doing such idiotic things as this but I agree with QQQ. Instead of trying to write a standard they can't understand... use your efforts to disseminate information about basic things such as this and do your best job to convince them to use a professional in this field who stays up to date on the latest technology in a way his sparky can not. We know what is best for a house and will continue to know by educating ourselves constantly. This industry almost defies any standardization because it morphs too quickly. Anything you write is liable to be out of date before it goes to print.