As a nomadic rather than mobile user, I am strongly in favor of a laptop that uses external power. The battery is a significant portion of the weight of the laptop and I don't use it (unless I accidentally jostle the power cord).

So I'd like to see (for laptops and desktops) an external power supply.

Power supplies also generate most of the heat in a laptop (the rest comes from the CPU, I think).

Anyway, I'm a noob (http://www.sysopt.com/features/cases/article.php/12024_3709426_1) but not happy with most aspects of how PCs are made today.