this is double-track post:
1) request for *.pdf, *.dwg, *.dxf, *.svg and other formats auto-write-mechanism collecting all drawings from Parts in file, assembly level and main assembly. This should gater all drawings from file and perform save to listed formats.
2) drawings managemenent system (see below):
Current management collects all drawings on top level, I would suggest to keep drawing of Body in body section, and in top level of tree have "Pages" folder which will collect all links to drawings from files. Drawings files should take bodies names for good recognition and add suffix if there are more than one page. Automatic creation will create files with names added from bodies to pages.
I invite you to the discussion.