What is confusing to me is if the visualization actually running the code or is just static analysis of the code?
The reason I ask is if its running then what you have built is a language with an absolutely awesome visual REPL. If it is please say its a language with awesome visual REPL! A potential Excel for programmers killer. There are languages that tried to do this (Squeak, and Racket come to mind) but they were generally academic and more often for students/young adults (and not for businesses).
However you say whiteboard through out your marketing which makes me think brainstorming tools ala evernote, orgmode etc. I realize for VC they might prefer whiteboard.
Whiteboard to me is sharing and not really a tool. It means I have to register and create a profile when all I really want is a language with a powerful visual REPL. (again just my point of view on marketing).