Yes. In Scholia, I have tended to use a lengthy list of languages, something like SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en,cz,da,de,es,fr,jp,nb,nl,uk,zh," . } to catch these situation. For instance, a lot of Czech books have been uploaded with only Czech label. For me, with a da or en environment, these would only show up as a QID. mul will to a certain degree help with the situation and @EgonWillighagen has been implementing [AUTO_LANGUAGE],mul,en as Scholia's default labeling service parameter now, but I think that [ANY_LANGUAGE] or similar would help

@EgonWillighagen: Thanks for reporting this. For future reference, please use the feature request form (linked from the top of the task creation page) to create feature requests, and fill in all the sections in the template. Thanks.

In T377654#10244129, @Aklapper wrote:

please use the feature request form

I am sorry; I was looking for that but clearly overlooked it :(