I think it would be a good idea to introduce a Versioning system within the Workflow Automator Module.
This would enable Administrators to perform a rapid rollback to a previous version of individual Workflows which are experiencing issues.
The metadata is already there in order to achieve this as, if you look at Activities within historical tickets and find a Workflow entry that has since been updated and click it, it brings you to the old Archived Workflow version (but you can’t do anything with it):



