I don't know, I like M lenses and all, and I've certainly owned a lot of Leica, ZM and CV lenses for M mount, but, if I was in the market for a camera to primarily use with live view, I'm not sure I'd spend $7K on one from a company who doesn't have the expertise in electronics that some of the Japanese (and Korean) companies have. If that was what I was interested in, I'd likely just go buy a Sony A99 and Leitax some Leica R lenses, Zeiss ZFs, or even just use the native ZAs. Of course, size and weight may be the issue for some, so we'll have to see what the alleged FF NEX camera brings to the table.
I can understand that live view and movies will be useful for rangefinder users that need to use it occasionally, but I don't have a lot of faith in the M 240 as a liveview only instrument. We're already finding out the disadvantages like refresh rate, magnification zoom, etc. Leica's strength is in the mechanical elements.