I have found that the DMR's files can handle a lot more abuse than the a7II's files. I'd like to see how robust the SL's files are before making any judgement about the camera's value.
Arguably Sony has hit a sweet spot with the new A7RMKII, and the glass (Sony G, Sony Zeiss, or Zeiss) is top quality too. In the past, one could argue that Leica RF were overpriced, but there were no viable options really. Now, with the Leica T, and the new FF SL, there are very viable alternatives.
Honestly, I see very few people shelling out Euro 12,000 for a kit of camera plus zoom lens, when you can have for all intents the same IQ with Sony A7 system.