I disagree that "It's not a space that could really use innovation." There's quite a lot of innovation and experimentation in the visual programming space, and

I disagree that "It's not a space that could really use innovation." There's quite a lot of innovation and experimentation in the visual programming space, and many vastly different approaches to visual programming. You forgot about block based visual programming languages like Scratch, Snap!, and Nassi-Shneiderman diagrams, and also the most ubiquitous, widely used, universally known, commonly taught, extremely powerful, and easily accessible style of visual programming language, which the worldwide economy depends on and would collapse if millions of people didn't regularly use them every day: spreadsheets.