The purpose is to give full admin rights, but not to the proprietary theme files.
Our website is on /root/public_html/
We want to move only the themefolder /root/public_html/wp-content/themes/ beneath the accessible files to /root/themes/
All other files stay as before on /root/public_html/
Then with .htaccess rewrite, we want to make the whole site work as before.
Is this possible with Wordpress ? With other systems like Modx it is possible, and is even suggested to improve security.