@SciencePhysicist As enthusiastic as I am to see Wayland developing, there's one papercut on X11 which would turn into a deal-breaker under Wayland and I haven't seen anyone but Enlightenment acknowledging it:

There needs to be some mechanism for preventing a compositor crash or forced reload from kicking the user back to the login screen.

As someone who leaves my X11 sessions logged in for weeks or months at a time, I've never had a KDE session that didn't need Kwin restarted at least once. (Usually more unless I turn off compositing.)