Action Rules are ticket-specific, unfortunately there are no asset-specific rules and it isn't possible to achieve what you are wanting within the software.
You can however, go down the route of using Powershell or running automated database queries that run when items are updated from the database side, however this is not supported nor is it recommended. I can also confirm that if you did go down the shell/query route, it will achieve what you are aiming to do, but is a right pain to get working exactly how you want.
...and of course, backups always recommended.
Ah I though as much. Many thanks for taking the time to reply. I've made a feature request for it. I cant be the only person that would find it useful.
Agreed, you've got my vote.