For me DSLR is not dead yet. As I have invested in F mount lenses over the years, I will use my Nikon D750 as long as it works and then replace the shutter or get a second hand Nikon FF DSLR if D780 is discontinued by then.
What's so great about a DSLR?
I understand the nostalgic approach, but technically...
When the image is created, the technology is absolutely the same, sensor -> shutter -> lens, end.
Unfortunately, many DSLR manufacturers have messed up the transition to pro, or semi-pro, DSLMs. From there I can understand the sticking to DSLR.
- The change/shortening of the print run only brings a little more compactness and is a deterioration from a technical/optical point of view (significantly more oblique angle of incidence of light on the outer pixels).
- High quality and fast viewfinder image? Sit, failed! The Olympus DSLMs show how badly and arrogantly this topic was approached by the DSLR manufacturers. Even the e-M5 offers a great viewfinder image. Very fast, enough for objects with 300 km/h, brightening for darkness, up to 14 x magnifier for focusing. The current viewfinder of the Olumpus DSLM should bring tears to the eyes of most DSLR/DSLM users, especially with FF.
- Never touch a running system! Why change proven (also haptic) designs no matter what? Just to show it's a DSLM now? Why should you treat a DSLM differently than a DSLR? Ok, apart from the (possible) advantages of the viewfinder.
But at least the old DSLR manufacturers now have a new market (sales) for lenses with the new edition size...
If I currently need a FF camera (DSLM), I would have to look for the fewest restrictions. Or grab a GFX100/S or GFX50S/S II right away.