It would be great if the API would allow me to export in-place families to separate files. In this way, I can more easily reuse content. Upvote if you're interested in this feature too!
Why would you build support to encourage people to mismanage their Revit workflows? Spend that time educating these folks how to properly build families.
I really don't want to make judgments on how people use Revit, I just want to support users in as many ways as possible. I'm not an educator, I just want to aid users with automation.
By exporting in-place families to their own files, and reusing them in new projects, I could actually help users avoid using in-place families in new files.