Not sure if this is the right place to mention / request this but:
Some API methods to create users & other tasks found in Administrator would be a cool addition for future releases.
Programmatic creation of user accounts via the API would be great for domain additions and migrations.
You can bring your idea in Windchill community, here: https://www.ptcusercommunity.com/community/create-idea!input.jspa?containerType=14&containerID=2034&...
Didnt think I could/should put WQSE related stuff in the Windchill area