I'm finally getting things down on paper (writing code) to flesh out my ideas of visual programming. I'm currently using Racket to prototype things, learning its Graphical Interface Toolkit. There's a long road ahead though, with a lot of technical challenges to appropriately realize the virtues of the paradigm, which I feel has a much higher ceiling than text-based languages. What is frustrating is that I have had the ideas for the past 4-8 years, but I am finally just getting things going.
https://docs.racket-lang.org/gui/