It already does that[1].
> But there is already waypipe¹ to do that kind of remoting.
That requires Wayland on the client side, doesn't it? I don't expect this to be super-practical anyway, but it's fun to see how far you can push a terminal.
[1] "If your terminal supports images (like kitty or iterm2) you can render windows at full resolution (performance may degrade)."