Personalization has returned some more functionality like previously fore setting the Wallpaper, Color, Sounds and Screensaver although wallpaper and color open up the modern UI settings, also the left navigation pane is fully populated again, not sure why they are starting to bring this back but maybe they will continue to bring back more removed customization.
I have edited my shellstyle.dll THEMECPL_UIFILE and made it so they open the legacy wallpaper and color settings instead, the modified UI files are attached if anyone else wants to use them.
