Clients request and/or pricing sets are always being requested with tonnage. But Revit doesn't even calculate the weight of a column the same way it does a beam or rebar. Getting a crude, but quick tonnage report that (by default) would include all forms of structural steel; Columns, Beams, Joists, Rebar, should be one-click. Then simply uncheck the types that you don't want to see. Getting a tonnage report out of Revit "Structure" should absolutely be a One-Click, out-of-the box function. It is currently WAY too hard to get a tonnage/takeoff that is anywhere near accurate enough to be useful. Yesterday I attempted to get a tonnage report for a 310,000 SqrFt structure, and it came out to roughly 35 tons... This tool would be used every day.