Slightly off topic, but it's often bugged me that remote desktop protocols push for things like video and audio redirection as if everyone was on gigabit networ

Slightly off topic, but it's often bugged me that remote desktop protocols push for things like video and audio redirection as if everyone was on gigabit networking, but I haven't seen much in the way of pushing down down down on bandwidth. Dameware Mini Remote Control from years ago used to have options to set grayscale and dithering and horizontal scanline interleaving(?) and slow refresh frequency and things, but I imagine going beyond that - a line sketch of the visible window borders and their titles, then let me draw a region to update with the mouse, scrape the text out and send that to me. There's ways to build TUIs inside CLIs, but what about squishing a GUI down towards a CLI-style-basics?