(Screen-comparable resolution) XR relaxes the tight constraints of screen real-estate, and enriches representation with 3D. And encourages richer human interface devices. All reducing visualization cost and increasing payoff.

Beyond J, similar visualizations help with "just what is happening here?!?" issues with macros, multiple dispatch, inline caching and code, optimization, collaborative compilation, and so on.

Javascript has a trend towards fully-deterministic checked styles, supporting the dream of ASTs being the canonical representation, and making it easier to do representational editing.

When onboarding someone to a program in a J-like language, eyeball abstractions (phrases and patterns repeatedly used, but not named) will get described. What if an IDE can capture those, without compromising the clarity of code brevity?

> I wonder if it would be possible to just code in a gui like this directly.

So I hope and expect to see much more of this in the years ahead. Yay.