Killer feature is intuitive UX. Using DarkTable was an exercise in frustration for me.
In darkroom mode you can’t navigate to other photos with cursor keys. Since the cursor keys do nothing else I have no idea why the aren’t bound to the nav. You have to double click on a photo to select it, one click does nothing so again I have no idea why not just bind single click to select. Then it recenters the entire row on what you selected, which I find disorientating but I suppose because you can’t navigate with cursor keys this recentering is necessary.
If you are willing to read the manuals and relearn everything it can do what it’s supposed to but the UX of LR is worth it to me.
Have you looked at the documentation? In Darktable you can click the questionmark, then click on any feature, and very extensive, well written documentation walks you through how, when and when not to use each module and feature.