External CSS and Source Maps during development
During Development debugging CSS can be hard because all style resource are directly embedded on the page. Whenever I like to inspect a particular element it point to the workbench HTML somewhere and the origin of the CSS definitions are located.
My suggestion is to treat CSS/SASS files during development in workbench as external files with source maps that point to the original SASS file rather then directly embed the CSS.
In production the behaviour can stay the same.
I think this feature would be beneficial for many developers.