Devine and a few others are actually working that out! We're collaborating in the Concatenative Languages Discord server on how to use, extend and improve the language.
Aesthetically and everything else - I would love to see a Conway's Game of Life or maybe a Terminal-based platformer RPG, or a digital art installation that takes over my computer like a virus - something to that effect in this language.
The whole picture: Everything you've said, the way your site presents it, the way you talk, and a video of a very impressive low-bit program.