SSMPropEditor has already been a big hit for users that have wanted to edit properties on multiple sheets at a time. Sheets belonging to AutoCAD's Sheet Set Manager (SSM) or AutoCAD Architecture's Project Navigator (PN).
The SSMPropEditor 1.0.1 version fixes a bug related to some particular sheets that could not show the properties.
Give it a try you too.
This video shows how it works.