make default settings override more granular to make it feasible for users to change defaults for individual properties
Users can already override and restore paraview's default settings with their own choices via the disk icon and cycle icons at the top of each section of the Properties tab. However these settings affect all currently non default values changed on the page. That makes it harder than it should be to change individual settings in isolation.
We can improve the user experience with save and restore controls for every property. We have to be careful when we do so not to clutter the GUI.