I understand that there are instances when you need more DR, but I have almost never encountered one using my 6D and now my M5. I have tried the Sony FF A7 II - and found that in my landscapes (compared to my 6D) there was no benefit and perhaps a detriment. Compared to my old 300D, I now find that I have to post process more and add contrast to get my photos the way I want, again realizing each person has their own opinion on how a photo should look. I consider contrast to be far more important than a wide DR range in the majority of my shots. As the DR increases, I see so many dull, washed out photos that have a lack of contrast.
Coming from an art and painting background, I may be looking at things a bit differently than the mostly "tech" crowd on this forum. One general rule of painting is that the human eye does not simultaneously see details in both the light areas and the shadows, thus one should not be painting detail in both. Either the light areas have detail and the shadows are essentially dark and featureless or vice versa. Yes, I understand that you don't want those shadows to be totally black in most cases, but a bit of shadow lifting is easily done with all Canon cameras that I have used. But I don't want anything close to the same level of visible detail throughout the value range of the photo. In my opinion, that is why too much DR - and especially the DR of HDR photos - is often a negative and the end results look fake, washed out, and rather boring. Again, that is just my opinion.
I have found it interesting that the desire for more DR is so overpowering that even the reviewers fail to see the negative side. A number of years ago I remember reading a camera review of a new model. The reviewer complimented the camera for adding a stop or more of DR and then in another part of the review lamented the fact that photos from the newer version seemed to have lacked the "punch" of the previous generation. They failed to make the connection that the lack of punch was directly related to the lesser contrast and the greater DR that was now available on the newer model.
Yes, I understand that with enough post processing one can make use of the greater DR and then add more contrast. But having tried the "better" (more DR) Sony sensor and compared the results with identical shots taken with my older sensor generation 6D, I preferred the look of the 6D shots. So more DR is not anything I care about or am looking forward to. Not in the least.