Dawa: I think it's a great idea to add RStudio to the r-workbench playbook, on desktop workspaces. I think this could be very simply done by adding something like the following to the roles: section of the r-workbench playbook:

roles:
  - fact_workspace_info
  - rstudio
    when: fact_desktop_workspace

...although there may be the complication that roles are executed before tasks, so we should make sure rstudio is included after r is installed. In that case, you might have to do:

roles:
  - fact_workspace_info
  ...
 tasks:
     # R is installed here
    - name: Include ansible-r role
      when: fact_desktop_workspace
      include_role:
        role: rstudio