This business of forcing people to buy other wider lenses, on top of a very expensive body.... Unfortunately I think I will eventally agree with Walt that the M8 has been a regrettable adventure for Leica. Leica is supposed to mean nothing less than a completely luxurious, no-compromise, high-end photographic experience.
I think the modul-R would have fared much better if they'd simply looked at the market more closely. I was very close to moving on that system because of the family of lenses and, frankly, there are some times I like to do digital even though 90% of what I like to do is still on film. The way Leica discontinued that system made me very leery of their products in general.