The world has changed in many ways, and there is plenty of that these exciting shiny things to play with, if you wish. Yet too many great ideas were abandoned because, among other reasons, they were too ahead of their times. I welcome efforts like this, because they let these ideas to be known to the current generation, not just as history, but as something that fits into today's environment, tooling and goals.
How many attempts to create the perfect ide for programming the web, in the web, and yet we keep the distinction of what is source "file" and what is the app being run, and how you debug it. Smalltalk and it's developing environment made blurred this boundary, and might be a great inspiration if not a practical solution.