> > > Of course we are speculating based on a number of similar rumours, > but > > if this a a less than full frame digital back for the R camera, it > > will be the most expensive way to get into digital and wasting soem > of > > the lens investment due to the sensor size.
General rule: if you don't like a product then do not buy it. I think this rule might apply here as well, considering that you seem to dislike the product, based on the rumors anyway. As far as I can tell, nobody is holding a gun to anyone's head forcing them to buy the R digital back! There are certainly a few alternatives you can look into if you don't like the product, some of them you even mentioned. I think this R digital back is a novel and interesting idea, and I'm excited to see the image quality obtained by an R8 with the new back, and say a fast APO zoom. It might be a piece of junk, it might be great. My bet is that it will be pretty good. Leica may not be the most innovative, but they tend to produce products that enable to capturing of high quality images.
I personally don't care if a camera has a full-frame sensor and 14 megapixels - I care if it makes good pictures of the kinds of subjects I like to shoot. Digital or analog, it is really about the images.