I'll wait until V2.0 to take the plunge, but the notion of selecting a focus points after the shutter is pressed is very intriguing.
I think overall though that the device is too expensive to tempt people to explore the technology.
Pro's will focus on the lack of features, post processing options, no windows support for the devices image collection, limitations of uploading the pics to F'book or to Lytro's Cloud. Non pro camera geeks will balk at the price. And the rest of the market will consider selecting focus points post shoot a novelty.