Archicad is used for very large projects, but i think that the project organization in the navigator is not prepared for such.
I'd like to have in the navigator something like in DesignBuilder. Starting with the project, then the terrain should have the common levels and be independent to the buildings, then have separate levels for different buildings.
Something like the attached image.
yes completely agree for a child as the parent organization like on cinema 4d
and more give us the possibility to add color to the text and icons for more control