Another question: I don't take advantage of X network transparency all the day every day, but it is very handy when it's needed. Will there be an equivalent in the Wayland (or, should I say, post-Xorg) world?
Do keep in mind that just because you might be using X11 doesn't mean you get any network transparency at all. The network transparency only "works" if the GUI applications you're running actually use X's 2D rendering system. Which many things don't do because it's old and terrible and slow. QT5's scene graph backend, for example, doesn't have a X renderer anymore. So those GUI apps already lost network transparency (and did anyone even notice?)
On the other hand it turns out streaming video is super easy, entirely agnostic of the actual rendering stack in use, and not really that expensive in terms of bandwidth anymore.
This is kind of a joke answer but the real answer is: This depends on the compositor you're using. So Wayland may not be network transparent, but it's possible to implement equivalent functionality on another layer of the stack.
I find lack of remoting to be a showstopper for a lot of apps that belong in datacenters, but a web browser is one of the few where it's reasonable to always run on your desktop (attached to the GPU and display, which Wayland can't live without).
