"...So Niko, even if future Cameras will be both, why not offer two kinds? ..."
I'm not Niko, but I agree that there should be two kinds (at least) of cameras. One kind would retain the good "feel" of the classic Nikon still cameras for the predominately still photographers. If Nikon changed that basic "feel", they would annoy a lot of current users.
Motorized zoom lenses for video would require some new engineering including, possibly, an in-lens battery to power the zoom, if that lens was also supposed to work with still cameras. Otherwise, current video camera designs should be retained in designs optimized for videography. I see the possibility for a third intermediate design, basically a still DSLR with modifications for enhanced video performance, like motorized zoom and off-camera microphones and remote microphones or even radio-connected microphones.
Large sensor video cameras, such as the famous Red cameras, have the advantage of letting you "cherry pick" your footage for your very favorite still poses. I have already done that with my DV footage. If you just film someone who is talking conversationally with you, by using your video software's "frame grab" feature (I use Sony's Vegas video software), you can advance through the footage a frame at a time and find facial expressions that are entirely beyond the reach of still cameras, even those still cameras with high frame rates like 8 or 10 fps. People have facial expressions that last only a very small fraction of a second.
Admittedly, many of those expressions look kind of "dopey", but many are just interesting, and make good prints. In my case, with small pixel-dimension frames, I have to use good upsampling software to get anything with printable pixel counts. My current favorite software for that purpose is BenVista's PhotoZoom Pro 3, although I have used onOne Software's Genuine Fractals 5 quite a bit in the past.
Digital photography/videography is indeed becoming a "brave new world." The evolving wave of interest in 3D movies may become a tsunami. The number of 3D HD TVs in the marketplace has already surpassed what I expected by Christmas. I like the idea of LED backlighting and the four-color red-blue-green-yellow scheme, and I am kind of waiting for all that to be incorporated in a 3D HD TV. That could happen by Christmas.
(Not associated with any product or vendor mentioned)