The item that concerns me the most was this
video on the 1DC and that people may think this is the future of still photography.
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I remember a thread a few years ago where Daniel Browning was talking about the benefit of mirrorless cameras. I remember him mentioning several benefits, but I only recall four: 1) increased fps as the mirror no longer limits; 2) Increased camera life as you remove number of shutter actuations as the common limit to a camera life; 3) You remove the slight vibration caused by the shutter actuation for those that want the sharpest of images, and 4) smaller camera bodies as you don't need the space for the mirror box/OVF.
Are there any others? .