Hello from the Mapbox Team!
Several month ago I posted this thread https://forum.openstreetmap.org/viewtopic.php?id=70864 about our activity in the Netherlands.
Now we updated json files and are about to continue reviewing it. You can find json files in the table in comments for this ticket https://github.com/mapbox/mapping/issues/366. The aim of project is still the same to improve the quality of OSM data.
All your questions are welcomed!
Member of Mapbox team, Vlada