Interesting read - there's a lot of progress in the open map styling scene and OSM maps with good data can make amazing maps and it has many different features [0].
It's also interesting to make maps directly from raw data (in this case that would be aerial imagery with mostly elevation data). E.g. if you find good training data you can easily make "land-cover" maps and although my example (of Austria) [1] does not have annotations (addresses, etc.), it's still nice to look at and has the benefit of being extremely compressible (compared to aerial raw imagery).
It's also interesting to make maps directly from raw data (in this case that would be aerial imagery with mostly elevation data). E.g. if you find good training data you can easily make "land-cover" maps and although my example (of Austria) [1] does not have annotations (addresses, etc.), it's still nice to look at and has the benefit of being extremely compressible (compared to aerial raw imagery).
[0] https://wiki.openstreetmap.org/wiki/Map_features [1] https://turmfalke.httpd.app/test.html