Please note that it's only recommended for users of higher resolution to use this option; so you will have alienated users whining that they want it back because their screen scrolls to the left ...
They can always change it back - but I do not think it will cause an issue on 99% of users displays.
Donate to UBBDev today to help aid in Operational, Server and Script Maintenance, and Development costs.
Please also see our parent organization VNC Web Services if you're in the need of a new UBB.threads Install or Upgrade, Site/Server Migrations, or Security and Coding Services.