Back in 2015, I had the chance to make a symbolic contribution to KiCad: the creation of new symbols for the most basic components such as resistors and capacitors. Before that, KiCad used much larger symbols.
The merge request introducing these changes: https://github.com/KiCad/kicad-library/pull/104
Theses symbol were available in normal size:
Or in a small size variant:
