I'm always building new families as I work. It would save a bunch of time if I had a "Add Family to Project" option. This would launch the appropriate family editor. Let me build and save the family and then return to the project with the family ready to place with my cursor.
Right now it is a lot of directory navigation. Find and open open Rft. I actually have my own improved "templates" saved so it takes a few extra steps to get to the correct Rfa for me. Make family. Save family. Load family and browse all over the server again. Then run through the drop down list or project browser to find what I just loaded.