A M10 without the optical range finder wouldn't be a M10 but the EVIL10, it's missing the M, the Messsucher. Yes, the lenses are great, but so are many others. I am using a m9 because it works like I want a camera to work. its size is perfect, but it is way too heavy. It is fullframe and the quality of the files are great, but I hardly ever get it right out of camera, every picture needs PP, compare that to a Canon 5Dmk2, where often the heavily postproduced image isn't far off the enbedded jpg.
Live view would be great as an additional feature, if you don't like it, don't use it. and please I want tether support (with tethered live view). only then I can see it as a professional tool for anything but reportage. the times are over where the client peaks over you shoulde to glimpse at the shitty screen. they have to show up on the big computer screen not more than 5 seconds after they are taken.
I am earning my living with Canons, but my photographic passion is fulfilled with the m9
and: the m9 is the most beautiful looking camera out there. looks are important, don't change it. it is the only current camera that I know of which is worth looking at.