Windows Vista and Windows 7 added a number of screen savers but when you go to change the settings for these screen savors you'll get a message that says "This Screen Saver has no options that you can set." even if you go to the screen savor menu in Display Fusion.

This might seem like a closed case for most people but it was actually revealed at least 8 years ago that settings for these screen savors do exist in the Windows registry. Extensive information about them can be found here: The Ultimate Windows Screensaver Tweaking Guide

Support for Windows Vista was dropped by Microsoft on April 11th, 2017 and Display Fusion does not support it either but support for Windows 7 will be dropped January 14th, 2020 and Display Fusion does still support it and plenty of people still use it.

Some of these settings actually sound pretty fun so it would be great to be able to utilize them.