Summary
I applaud the fact that the NX1 is a big middle finger to the camera industry establishment that says – get off your butts and stop doling out new technology in dribs and drabs, because we've just shown you what's possible, and at a reasonable end-user price.
When Canon and Nikon awaken from their slumbers, they will have to look closely at what Samsung has done. No, they needn't worry about market share just yet, but they should realise that this sleeping Korean giant is going to be a force to be reckoned with in the years ahead.
Sony, who has been the upstart smart-ass of the industry, also should note that Samsung's new sensor technology means that Sony now has some serious competition in sensors. Similarly, Panasonic, Olympus and Fuji are going to have to keep the pedal to the metal, because unless Samsung lacks the staying power to persevere in the camera industry, the NX1 shows that it has both the cojones and the technology to become a major contender.
As for consumers – should you buy an NX1? Unless you really do need a broad selection of speciality lenses, I would say that there is a lot to admire about this camera – and it may well meet your needs. If I wasn't already heavily invested in two other systems, I would give it serious consideration myself, if only for its in-camera 4K video and high frame rates. The NX1 certainly provides excellent value for the money.