Simplify the pictograms to much graphic detail defeats the object.
(Entering a suggestion causes lots of hang-ups)
Re the V11 development interface (Showing "Visual Studio" in the top band):
In order for a pictogram (icon) to be communicative, it only requires to be visually discriminating. Packing in a lot of graphic detail is non functional, causes visual information overload, and defeats the object.
Perhaps more importantly, and the other side of the coin: there are so many pictograms, that the meaning of each one of them might not be remembered.