x11 has seen no development for 10 years. Staying on it for forever is not viable.
That is, they might have said "We're looking for new maintainers for X11. They will be responsible for its future direction, representing X11's interests to the kernel and to distributions, and deciding when (and if) X11 is to be declared deprecated."
As far as I can make out, what they did instead was say "We're looking for people to fix bugs in X11, but they won't get to make any nontrivial decisions."
Contributions have never been discouraged, but no one wants to work on xserver. Remember, this is a 20 year old codebase. With all the cruft and dark corners you would expect and more.
Fortunately, the source is available and if there is a need to make changes, that is entirely possible.
If you run `cage`, it will run a Wayland application in its own sandboxed window while the rest of the system runs X.
Similarly; if you run `sway` under X for example, it will start the window manager in its own window, and you can run Wayland applications inside it.
On the input side: touch gestures recognized as touch gestures, not as mouse emulation.
On both: hotplug of all input/output devices. Headless sessions and handover of sessions between console and headless, both directions. Reliable lock screen, even if popup menu is showing ;).
Impossible. I'm told if you're not running xscreensaver it is safe to assume that your screen does not lock!
Pop quiz, how many of those work on wayland?
And the last missing thing is WIP.
Erm, what ? Are you sure ? Why it is X starting without a mouse now ? It has not done it 10 years ago ? Why do i need a gazilion of font libraries now ? Why were the default fonts changed ? Why is Mesa a hard dependency now ?
When will you youngsters learn that something can be complete, done, and in no need of pointless reshuffling.