Increased Shared.storage file leading to increased memory usage of the Password Manager Service process and increased size of the corresponding _QPMStorageContainer AD account which in turn will increase replication traffic due to the size of the user account
If possible, keep the number of Workflows and associated customizations within each to an absolute minimum. The more you add, the larger the Shared.storage file grows and in turn causes more memory usage for the Password Manager Service process and increased replication traffic in Active Directory.
If you are going to use the same Workflow for all domains, you can easily add in the required domain in the User Scope section:
This will apply the Workflow settings to users within all Domains listed and the corresponding groups that you select in each respective Domain.