It might be my weary middle-aged eyes, but I cannot see any difference in the above flowerbed photos. I'm using a Macbook Pro with Retina screen, and it usually reveals any subtle differences.
I'm in agreement about the M 240 jpeg images producing overly warm skin tones. And sometimes the WB is skewed as well, but I had that same problem with my Canon dSLR.
I also find the contrast on the M 240 jpegs to be always too high for my liking, even when contrast is set to 'LOW' in the menus. The difference between 'HIGH' and 'LOW' menu settings seem to be minimal.
As a result, my workflow tends to revolve around the DNG files, which are usually much better than the Leica JPEG algorithms. I think Leica if Leica put their minds to it, they could come out with a firmware update that provided better JPEG quality. But I'm not going to make any assumptions that they'll do so.
Just when I feel like the M 240 is driving me crazy with all its idiosyncrasies, I'll examine my DNG files at the end of the day and inevitably I find a couple images that really impress me. That makes owning the M 240 worthwhile, IMHO.
For comparison, I recently borrowed a Fuji X100T. I shot the same scene with the Fuji X100T and my Leica M 240. Sensor differences aside, once the images were scaled for comparison I noticed much more micro-contrast and detail in the Leica image. The X100T is a great camera, but the Leica still won in terms of overall IQ.