@thedesigninstinct this would be the next addition to the Pro version and since it’s in early stages (decided to release it as it, due to the high demand), it will have some limitations, but it will allow the loading of a CSS/JS file based on the media query (e.g. screen and (min-width: 768px) for non-mobile view) which will prevent the browser from downloading the file if it’s not needed.
Note that this is not as easy as it sounds as there are dependencies between files and the visitor should not experience any loss in the functionality or a breaking layout. The feature is almost ready. The last thing before the first release is the documentation and explaining how it can be used to avoid the admin from making any mistakes.