Now we are talking, this is what I need "This beg the question /request that I would like to save parts outside the elements library folder." but this will works even beter ( if I can export it easely )
So, I didn't read everything, but about the request, I am voting a plus1.
Maybe even unlimited libraries off a kind or per project base so we can export those and send it to a coworker. Look at the Kicad 'manage symbols' dialog with a list of external Libraries of element and then with a export function of the project and elements yes or no included. ( still busy with a recovery project from drawings to make them digital; am at 25% but it could be quicker with some technical help like this. )
About the element editor:
Please make the use of keystroke delete/forward delete equal in use in both editors ( sheet and element editor ).On the Mac it is not used consistent.Thanks.
On file projet*.qet if you look the XML with a better text editor you saw element definitions is include in the project, open another project and on project tree collection you could load and share in your collection these new elements.
Regards,
Laurent