Well, it DOES double the amount of diskspace used, true. For me it's about 30GB, I think, so, nowadays, this is not a lot.
In respect to what files to copy, I wrote a small programm that does the check for me what files are new on the "source side" rom the "files" directory downward,
will create new directory subtrees on the targete side as needed on the fly and then copies new files to the respective target locations.
I'm working on identifying "model classes" on the fly, ( such as "plants" , "trees", "buildings" and so on ) and send them to respective custom directory trees, because
I'm really fed up with identifying what directory / artist "that special tree model I used last week" came from.
I'm also thinking of adding a comment to each fpe-file with the author's name to get rid of the author's name directories on the work side and still be able to identify a model if need be.
Lives of great men all remind us we may make our lives sublime