"GeoPackage" is the format of the future:
http://www.geopackage.org/ It has to become the new "Shapefile", but without all the limitations shapefiles comes with.
It's already supported by QGIS. And it has to be integrated in Map 3D! Because:
GeoPackage is an open, standards-based, platform-independent, portable, self-describing, compact format for transferring geospatial information.
Since a GeoPackage is a database, it supports direct use, meaning that its data can be accessed and updated in a "native" storage format without intermediate format translations.