Structural Framing Lineweight not Changing in Section

Imagine you have a Girder and a Joist as defined by Revit. You would like the Joist to be a thinner lineweight than a Girder, in every view. Not possible by default. Changes to the Subcategories of Structural Framing in Object Styles only affect plan, NOT SECTION. Subcategories of Windows, Doors, Wall Sweeps and other objects are affected by changes in Object Styles, just not Structural Framing. How do we work around this programming error? Edit the Structural Framing Family, make a new Subcategory, Assign the geometry to this new Subcategory. Now in the Revit Project file, open Object Styles and edit the lineweights of the new Subcategory you just made.
Anyone know why this is the way it is? Anyone have a better workaround?