Yep,and I want to do that too :)

I've written about it before, but in brief the mountain of standards is worth ripping out wholesale and doing write as a semantic protocol. It's needed to solve several things that work really poorly in terminals because their unit of compatibility is cells rather than a higher primitive. It's hard to bake something on top that works well.

The need is most strong in Accessibility, Text wrapping, Scrollback handling (i.e. making the scrollback editable and not dead text), and various other bits that make writing highly functional TUIs. Coding agents tend to find all those edge cases.

This often gets push back that it's easy, to which I can point nay sayers at the various many months long issues on things in Codex, Gemini, Claude etc. on flickering, scrolling, key handline, IME, ... doing anything moderately complex involves modeling a terminal in a terminal app effectively.

Ghostty and Rex sort of do the opposite bit. If you think of it like a stack, they write a new layer underneath that transports the cells on a better multiplexer layer 0. I think a new semantic layer 2 is an approach that would be neat to work with.

I think I mostly just want to see someone do it so I can see what it looks like; it just feels like something that should exist. You're taking baby steps towards it! :)