Might be too much to ask but I think it’d be interesting to have a more detailed map subsections (probably German states would be priority). I know this isn’t the most detailed or possibly realistic idea but maybe it could be built off of.
May your tea be cold and your crumpets soggy, toodleoo.
Maybe dividing it into less detailed regions wluld be good too. E.g. instead of the 10+ states in Thuringia in 1860, it could be summarised into one region. Though what about coins from normal Germany? How would they influence the detailed map?