@cblake The grid file system seems really interesting. Its like it combines the best parts of all data structures. Feels complex to build. Maybe I should try that next.
@Stefan_Salewski, sorry its 2d only at the moment. It might not be hard to expand it to be a 3d version. @enthus1ast yes, with this and <https://github.com/treeform/bumpy> you can do a lot!