Alot of GLAM-Wiki and other media donations revolve around encouraging use of donated media within other Wikimedia projects besides Commons. However, at the moment, there is no simple and concrete way to determine which revision (and thus the user who created the edit) an image is added to another Wiki. This knowledge could help GLAM-Wiki organizers and others engage with users both to positively interact with them -- such as provide rewards, connecting them with people interested in the collection (or with knowledge about it), or evaluate the impact of their donation on different language communities -- and to identify patterns of behaviour that somehow obscure collections of media, etc.
Right now, its impossible to track recent changes over images without first doing a comparison of pages the media is transcluded then going into the history of the pages individual on each wiki (i.e. its a pain) .