The link to my map is here.
Creating this project definitely showed me how cool these kinds of projects are. Seeing completed projects is already interesting, but being able to interactively create one myself made it that much more exciting. I can see this tool being used to verify and observe the accuracy of historical maps in many fields. In particular, I believe this tool could be used in sociology or history. There are many analyses one could conduct: how accurate were maps from [X] era? If a certain map was off, was this done intentionally or accidentally by the creators? If intentional, what bias does this introduce and why?
The main problem I see with using georeferencing is simply finding maps that are suitable for use. From my limited experience, it seems that maps must be of pretty high quality and depict the landscape from a certain perspective to be used.
One can access this map via software such as ArcGIS or QGIS. The map is also provided in the following formats: WMTS, TileJSON and XYZ. Finally, one can also export it in the form of a GeoTiff file.