...I'd love to have one based on the M type 240...CMOS sensors handle highlight and shadow space better, the creative possibility of such a body would be endless - rich, clean shots made at iso 51,200, for example.
My view is that Leica doesn't need to mess with the M-Monochrom's CCD sensor, unless procurement of this type of sensor becomes difficult in the future. First, one doesn't need ISO 51,200 unless one is into surveillance photography. Second, while M-Monchrom shots at ISO 5,000 and ISO 10,000 can look great, the dynamic range at this speed becomes very narrow, which is can be an important concern as the lighting is often very high contrast in these situations, which can make getting the "right" exposure hit or miss. My own preference is to shoot at ISO 1,250 and push in Lighroom 5 —
same technique as the ISO 640 technique for the M9 — this also preserves highlights, which provides much more flexibility when post-precessing and results in much more "film-looking" highlights.
I love the M-Monochrom, and like not having to convert color shots: knowing that I can only have B&W when shooting with this camera makes me more concentrated in visualizing the B&W, which I think leads to better B&W photography. However, no one needs to feel that an M-Monochrom is essential, as there is a lot of good B&W photography from color digital cameras. Here are a few pictures: see the examples below with the GRD and the GXR-Module.
M-Monochrom/Summicron-28 at ISO 8,000 at f/2.0 (no exposure diffcilulty)
Dambulla
M-Monochrom/Summicron-28 at ISO 2,500
Bangkok
M-Monochrom/Summilux-50 preASPH at ISO 1250
Paris
Ricoh GXR Molule/Elmarit-21 ASPH
Chiang Mai
Ricoh GRD2
Bangkok
—Mitch/Bangkok
Looking for Baudelaire [WIP]