Aye-aye, sir! There’s a starting point now: https://github.com/darktable-org/darktable/issues/1970. More may follow.
Hm, your reply was fast , here’s another one: https://github.com/darktable-org/darktable/issues/1971.
These are not the most important ones, there are ones of much higher relevance (such as being able to correct the image’s time stamp (also reflected in the xmp) to get the sorting of images correct if camera clocks were off), but for them I need some more time. The ones I posted were these I was able to put them in quickly.
Hm, and I found out that github’s markdown editor does not work properly for me (and my browser) anymore .