Not only we neet be useful way to save filter styles to apply in more than one view without replicate the visual overrides of the filter manually (filter by filter one by one projected line, projected surface, cut line, cut surface), or applying a template to copy the filter graphics and then remove the view template.
We also need a way to create a legend from filter overrides in Revit.
Filter overrides usually mean something or classify the elements in views representing attributes or special characteristics of the objects. In some case we are forced to create legend of that with filled regions and detail lines (with overrides, to no create a lot of types). But if the filter is modified we have to modify manually those legend.
It will be very useful if revit automatically create a legend from filters in views, like the ones we have in AutoCAD Map 3D or any GIS software.
AutoCAD Map 3D
ArcGIS Pro