In the developed world (esp. the US), the hammer and sickle, symbols of labor, are not actually used that widely anymore. Industrial monocrop mechanised agriculture and assembly-line manufacturing processes, as well as the use of robotics means most workers are no longer swinging a hammer or sickle as they produce goods, such as food, for the society. tl;dr: As manual labor has changed in the US & developed countries, does this well-recognized Communist symbol need updating?
I like the normal hammer and sickle, and I also like the variants with gears. The WPK variant with the brush is cool too.
The WPK one is perfect. Adds the intelligentsia/artist class as a vital component along with the workers and farmers