Since you'll capture the color, intensity, and direction of all the light, you can experience the first major light field capability - focusing after the fact. Focus and re-focus, anywhere in the picture. You can refocus your pictures at anytime, after the fact.
What's missing? Nothing you'll miss. No auto-focus, no shutter lag, no unnecessary modes, dials, or settings. And no flash, because Lytro can handle many low light settings. So, no obstacles to the perfect shot.
I'm curious how it works in the dark.