I mean, I agree it'd be interesting. But useful? Compared to basically any form of GUI be it X11 or Wayland, the resource usage is I would think on the order of 1% as much, and maybe less.
Still, in limited systems it matters. It could make the difference between usability and curiosity. Don't make the same argument people make about desktop web applications.
https://github.com/cosmos72/twin
https://en.wikipedia.org/wiki/Twin_(windowing_system)
And both of them seem to re-implement their own, inferior, versions of the TurboVision text-mode "widget toolkit":
https://tvision.sourceforge.net/
https://github.com/magiblot/tvision
A merger could result in something greater than the sum of its parts.