I see the lighting requirement being split into two different types of lights - there are the lights to see by, and the lights to make you be seen. I believe that the most effective lights in the 'to be seen' category are flashing lights, and in my ideal world, those would be powered by a dyno-hub. Unfortunately, I am not aware of a dyno powered headlight or tail light which offer a blinking mode. The lights to see with could be either battery or dyno powered, and there, the brightness and beam pattern will depend on where you ride.

My commute bike has as it's lighting complement:
Dyno-hub powered always on headlight and tail light (Schmidt and Supernova)
Battery powered tail light (Dinotte 140)
Battery powered front blinky (Cateye Loop).

Not ideal, but it works.