Not to mention the time it takes to "negociate" the link probably when you plug it and leaves you with the feeling that nothing works. I don't count the number of times I've seen people press every button on the laptop to see if it would change anything on the black display.
BTW at home I'm still running on the VGA connector at 1600x1200 on an excellent, very clear display. The secret is to use those 13W3 connector cables from Sun immediately connected after a converter plugged into the DB15. No echo, no color issues, runs fine at 90Hz (250 MHz). They contain 3 independently shielded coax cables for the colors. Yes that's the same number of pixels as full HD, at 90Hz. Unless I'm mistaken, we're not far from the original HDMI limit ?