We've pulled this thread quite a bit off course already, so why not wander into unknown territory?
The decoupling caps are sort of like the note on a mechanical fabrication drawing that says, "Break all corners and deburr all edges.". We all learned that in Junior High School shop class, right? But we still put the note on drawings, and we still lacerate our fingers while handling newly-manufactured parts.
KiCAD has not yet matured to where it has an easy, integrated feature for handling drawing notes, or tabular information in general. (A few days ago we were discussing how to handle assembly variants where some parts are fitted to some manufactured assemblies but not to others. A table is a natural, efficient, way to convey this information to other humans.) I know this is a "Wish List" item, and I can live without it while other features are improved.
A related wish is a way to communicate information from one KiCAD application (e.g., EESchema or Symbol Editor) to another (PCBNew). In many (perhaps most?) commercial organizations of more than a dozen technical people, the circuit design (schematic) and PCB layout are done by different people. In my experience, a significant amount of details are passed by informal, face-to-face conversations. This is often significant stuff, but not things you want to clutter a drawing with formal notes. Even when only one person is involved, the notepad that lives beside my keyboard typically contains several "Notes to Myself" about how something should, or shouldn't, be done. It could be useful to have a mechanism, perhaps at the top Project level, where the various participants in a design effort can leave messages. Such as, "C2, C7 and C9 to be located near U1, U4 and U7.".