The problem with Discogs is that the data is very unstructured, everyone can make up their own credit roles, there are artist AVNs, etc. So while it’s true that there’s often good information for humans, mapping this programmatically onto the data of other metadata sources is far from straightforward.
Anyway, there are at least two existing feature suggestions with discussions, the first one has more votes:
Glad it helped and interesting that you got additional ones automatically. The inner workings of this are mysterious, first of all why the „go to composition“ is sometimes missing, what’s necessary exactly to make it appear, and why sometimes nothing helps. (Some of it are clearly issues that reside in the Roon cloud, as seen in the Cat Power thread that I mention in the above-linked thread)