This is the first Leica which draws my attention since I bought a new M6, more than twenty years ago. Leica is going back to the original form factor, which was, and still is, my main attraction point. However, this comes at a cost of about €6'500 (a premium on the price of my, so much more capable, Nikon D5). Not sure that I want to make the investment, especially that I realised over the years, that I am, in fact, not a genuine Leica shooter. In other words: I like the philosophy, but I am not able to adhere to it.
This said, I like very much the ISO dial in replacement of the rewind knob.