[throwaw111]

I mean, no one does what you suggest on the web. You do not render a web page to an image and send that to a browser. To summarize. No one wants X11 transparency to run a web browser. But ok, if someone wants to do that.. X11 still can be more advantegeous over waypipe.

[gf000]

Because on the web we have a very very complex protocol(s) built up over decades to tell a client what to draw locally. That's html/css/js and its scope is far larger than of x draw commands (it's also an application model).

But again, GUI apps don't use X draw commands for the most part, so they are effectively a bitmap/video stream to X's eyes. And what's better to transport a video stream than a format designed for efficient transport of video streams.

[throwaw111]

Idk given there is no concept of cache. But also I'm looking at GTK menu, it is a simple menu, white bg. May be it can be rendered using draw calls. May be the complex UIs is just fashion and will be gone in a few years. The GUIlib could detect if program is running on a remote computer and reduce the effects, but they will need a concept of network for that.

Also the font rendering. The client could then just send text to the x11 server if it was not vector fonts.

x11 xrdb. With it you can configure say font size on your computer, not on the computer where program is running. Say comp1: 10pt, comp2: 20pt.