The demise of 4/3 DSLR format is quite sad... I used to be one of the advocates for 4/3 format in this forum due to the quality of the Zuiko glass and Kodak CCD. In spite of the less than stellar high ISO image quality, I could make the kind of images I wanted with the E-1 and E-500, love the colours and tonality. However, once the format started using CMOS (marketed as NMOS) sensors, I find that the images lost its 'soul', the colour shifted away from what I liked in the older bodies. That was tolerated as one can still shoot in RAW and do post-processing.
IMO, the format lost its way with the release of the E-3, whereby you basically have a relatively small sensor in a large body that is as large and heavy as fullframe cameras such as the 5D and D700. To me, that doesn't make sense at all, the format is not playing to its strengths of being smaller and lighter but with equivalent performance. Once consumer compact bodies such as the E-620 are discontinued, I no longer see any future in the format and like microcosm above, I am now using a Nikon D700, which ironically, in terms of ergonomics and the colour/tonality of the images, is rather similar to the E-1 but you get the much better high ISO performance and resolution.
m4/3 is a good thing to have happened, perhaps a 'natural evolution', hopefully Olympus and Panasonic don't screw it up like what they did to 4/3, hope they release a m4/3 body in RF format but with integrated VF soon.
Tao, since you have the D700, i'm curious what are the lens you are using now. I tried the D7000 (i know it can't compare to the D700) for a day with the 18-200mm... didn't like the way the camera buttons were built and of course i think the Z12-60 would beat the hell out of the 18-200 lens in all aspects of sharpness and colours.
But if ever in the future... maybe a D900 in the distant future should the 4/3 really crash... what would be the lens to replicate the 7-14, 12-60 and 50-200 on the Z system in terms of sharpness and IQ?
Thanks!!