Fast input for note taking
Ideally it would be possible to use QuantumSheet to take or write notes in realtime. I just saw some post about someone doing so with very different tools, but the general idea very much applies.
https://castel.dev/post/lecture-notes-3/ https://castel.dev/post/lecture-notes-1/
Here is another interesting approach. Most of the keyboard shortcuts are horribly unintuitive, but there are probably some hidden gems in there https://github.com/johnbcoughlin/calctex
This one also has some cute ideas for what could be supported https://github.com/runarberg/mathup
Being able to type x1 and have it (optionally?) autocompleted to x_1 would be neat