Have an option to insert variables into an articles such as $phonenumber which can be managed from a central page.
This will make it a lot easier to update multiple articles that contain the same variable without having to search for the specific articles.
Another example this could be used for is product prices. For example you could say 'For use case X you could use $product1 at a cost of $product1price.'
As cake on the icing, an additional option to view the articles that contain a specific variable would be great.