Danke für den tollen Blog-Artikel und die Zusammenstellung! Gerne würde ich hier meine Schweizer Freizeitkarte https://www.freizeitkarte.ch/ ergänzen, die genau dem im Artikel genannten Zweck dienen soll.

I did the original import nearly 6 years ago. The data is based on the CIA World Database and the import was documented on the following wiki pages:

• http://wiki.openstreetmap.org/wiki/WikiProject_Import_WDB
• http://wiki.openstreetmap.org/wiki/WikiProject_Import_WDB/Africa

Since the “wobbling” effect is also visible on other borders and is caused by the inaccuracy of the data, I don’t think it makes sense to manually fix the borders. There is much better data available now which should be considered to be imported instead.