No, it's not raw GIS data. Even the vector tiles are generated for a certain scales (or set of scales). They contain only data that should be displayed at given

No, it's not raw GIS data. Even the vector tiles are generated for a certain scales (or set of scales). They contain only data that should be displayed at given scales and also the geometries are being generalized depending on the zoom level. What Mapbox can do, is to _remove_ data that are not in stylesheet - but as I understand it, that is being done server side (https://www.mapbox.com/blog/style-optimized-vector-tiles/ https://www.mapbox.com/blog/style-optimized-vector-tiles/). So in theory you could put more data into generated tiles, users could create their customized stylesheet (would have to be found out how, the server needs to have it accessible, it does processing based on it) and it could work - for a few of them. If everyone would do it, you are back to square one. This is usually usable for a defined roles (what group can see what in your data), not for picking and choosing every possible object at arbitrary scale. The thing is, you usually cannot put all the data in the tiles and just serve them - most users won't use them anyway, so you would just waste bandwidth. That one guy who wants something special usually wants other object than that second guy, who wants also something special.