Ability to update same document across multiple templates

I would like to put forward an idea that would save users a lot of time and energy where multiple templates are used where some of the attachments are common.

I think when a user identifies a template attachment to replace with a newer version there should a functionality to recognise that same document in other templates and offer the ability to update multiple templates at once.

For example, a user have multiple employment contracts (with varying terms) however they all are sent with the employment handbook.  A new version of the employment handbook is released.  Currently this means opening and replacing the document in each and every template separately, for complex organisations this can be 20 templates and 30 mins of work.  My suggestion would require a change in one template and then a decision box as to whether it applies to all other templates containing that document.  This could potentially reduce to 3 minute task.

I currently have to update 9 compliance documents and one benefits document across 12 templates and so I am looking at half a day carrying out a task that could potentially be reduced to 20 mins.