Click 'Set' and find the BBEdit executable. It has a collapsible view of the filesystem. The name, group and permission fields are editable. If you are root user, even the owner field is editable. If you hit the top of a column in the ListView, it will re-sort the file list based on the selected column.
Inspector is much improved.
Inspector gives root users the ability to set ownership of the selected file. Do not do more than one change at a time if you use recursive button. RBrowser now detects and launches Classic apps correctly. What is still missing is finding the document types supprted by Classic apps. This is coming soon.