create directory for new DCR

System

When the user is in a directory within a workarea and they select new DCR, is there a way to create the corresponding directory within the templatedata/category/type/data structure? I don't want users navigating into templatedata if I can avoid it, and there doesn't seem to be a "New Directory" in the save DCR dialog. I know I could do a custom menu item, but has somebody already done this (preferably without bringing up a new browser window)?