the transformations you want don't exist.
True for whatever your company competes on, but not for everything else (the so called "hygiene" factors, that don't need to be great, just basically work. e.g. Apple doesn't compete on their internal payroll software).
Your point on complexity is spot on. The abstractions and symbolic references that make programming so difficult handle complexity far better than the blocks and connectors of FBP and visual programming.
OTOH the two roles of component-maker and assembler is realized in the massive standard libraries and open source libraries of all mainstream languages.