This is very cool, but I'm going to say the inevitable...

How hard would it be to support cetz? I'm not touching LaTeX if I can avoid it, but I'm using Typst all the time.

Probably quite doable with a coding agent.

There is a full wysiwyg (vibe-coded) presentation software based on typst available which partially implements exactly that:

https://codeberg.org/presenst/presenst