I was reading about this SetResourceReference function: https://learn.microsoft.com/en-us/dotnet/api/system.windows.frameworkelement.setresourcereference?view=windowsdesktop-9.0

It seems to be the code-behind alternative to using the {DynamicResource} markup extension. Using this you can set a string on a text block, for example. When you change the resource dictionary for your app (ie: localization) then, this would change the reference to the text.

Of course this can be accomplished with existing functionality so it's not a high priority feature request in my eyes.