I see that the REST API has some things that tabcmd does not, for example, Add Tags to Workbook, Add Workbook to Favorites, Query Workbooks for User, Query Views for Workbook, etc.
By the same token, have the REST API do more like what tabcmd can do, for example, export a packaged workbook, runschedule, set setting, etc.
Have the programming capability to perform Tableau Server commands just like we can in the GUI.
We need rich programming options and the documentation to back it!
From the thread Request: Increase tabcmd commands, similar to API.