Green wireframe (because I like green color and old green monitors look cool ). Not as detailed as "real world" in game but a "little" more complex than SS version.
I agree that netrunning is essential to the Cyberpunk. I always wanted to see it and I was terribly disappointed when I discovered that internet doesn't use Ihara-Grubb trasformation algorithms.
Green wire frame with hi-def icons representing the corportate logos and other people/ programs in the 'Net would look amazing!