I make https://mapcomplete.org https://mapcomplete.org which also serves as easy-to-use data consumer and editor. I sidestep most of the complexity by having a

I make https://mapcomplete.org https://mapcomplete.org which also serves as easy-to-use data consumer and editor. I sidestep most of the complexity by having a lot of thematic maps, each focussing on just a single topic (e.g. mapcomplete.org/shops, https://mapcomplete.org/toilets https://mapcomplete.org/toilets, ...)