HUBS
From the beginning, I've envisioned the Night Heron to have drum brakes. Both to simplify the look of the bike and to add a bit more weather proofing to the system. I'm planning on using this bike as a year-round commuter in the city, so adding the capability of stopping in the rain is appealing. Following my friend Darrell's example, I've decided on Sturmey Archer hubs.
Let's take a look at Darrell's bike, Blackadder, once again:

Darrell's Blackadder has a Sturmey Archer X-FDD in the front, which contains both a power generator and drum brakes. The generator hub will provide power for a stylish lamp, but I'm not sure that bike powered lamps get bright enough to illuminate parts of my commute through Golden Gate park at night. I might need to suppliment any classy but not-quite-bright-enough lights with something like the Cygolite, which I have on my current commuter bike (I've heard complaint from oncomers that it's *too* bright (and they currently have brighter models), even on the low setting, but any dimmer and I can't see the pothole-ridden roads of San Francisco).
In the rear, Blackadder's got a Sturmey Archer X-RD3 which is a 3-Speed with the classic 177% gear ratio and drum brakes. The X-RD3 is the same hub found on the Pashley Guv'nor. I'm considering getting the 5-speed version of that hub:

The X-RD3 has a wider gear ratio of 256%, one step down from the lowest gear on the 3-Speed, and one step higher, with third gear as direct drive. Those two extra gear steps will definitely be useful on the hills of San Francisco.
RIMS
At first I was considering getting the rims powder coated to match the frame (of which I'm considering a dark blue, preferably with some sparkle), but the more I think about it, the more I think that'll just cause more expense down the road if the wheels ever get damaged. I like the way that black rims look with cream tires on the Pashley Guv'nor, but I'm not sure how those will look on the blue frame. I definitely have some digital prototyping to do.
On Darrell's suggestion, I'm considering black non-machined sidewall Velocity Dyad rims. I like the deeper rim profile, and I think it'll also provide a bit more rigidity over a boxy-profiled rim.