Interesting. Again I wouldn't know too much about it. It was 9:00 in the morning (oh no! 9!) and HID lights can only be so exciting... I mainly paid attention to the electrical circuit part of that intro course. Then again this was probably because I had to completely design (from wire size to ground fault circuits) everything in a fictitionous elementary school almost singlehandedly (including feeder branches and panelboard layouts). 3 weeks of my life I'll never get back, but I do have a little bit of an idea what will be happening in the houses I'll build.
I'd say that Construction Managers (or General Contractors) would be the most important part, but that's the area I'm headed. The structural guys might design it, but who will be out there building it?