When staging feature is enabled in the site settings ddmtool publishes to the live version of the site instead of staging. We used the tool until the staging feature was enabled but could not use it after that and had to manually apply the template changes in staging version of the site. The template changes then would get published to the live version of the site with the rest of the content.
The enhancement would be to use a different group id associated with the staging version of the site instead of the group id associated with the live version.