Fully lit attics and crawl spaces are not even seen in million dollar homes... Crawl spaces and attics aren't sexy, but having them fully lit is very nice having to do any work in them, and actually was a pretty good selling point with the last house that I did for my aunt. I just ran a 14 / 3 home run to the Attic, then a 14-2 to those lights, than a 14-2 down into the crawl space and put 6 keyless lights down there. also ran utility receptacles to both, and a receptacle for the heat trace for the piping.
As for low-voltage, I wholeheartedly agree with Larry, however nowadays the best thing you can do is have a centralized router in your house, then you don't have to use one that can throw a signal through 12 feet of lead brick to get reception at the far end of your house. Conduit stubs and chases are an excellent idea, and no matter how many circuits you run to wear, take any leftover 12/3 and 14 / 3 and run an extra spare multiwire branch circuit of each to the attic and crawl space. that gives you up to eight extra easily accessible circuits should you want to add on later.
I'm not for real fancy electrical gizmos, however I do like the looks of the Hidden screw cover plates.
Oh yeah, make the panel a piece of artwork. Clean labels and clean wiring. I would probably also spring for a Square D qo panel, with the visible trip windows on the breakers. of course if you wire it the way that is suggested on this thread, tripping a breaker may not ever happen