It us unfortunate that there is no hybrid Wayland / X compositor that would offer backwards compatibility for existing WMs, so people could switch to Wayland an

It us unfortunate that there is no hybrid Wayland / X compositor that would offer backwards compatibility for existing WMs, so people could switch to Wayland and keep all existing X-based desktops, while allowing new native Wayland applications. Something like UI-less Wayland compositor that is also an X server, doing 1:1 mapping between top level X windows and Wayland windows. (There is XWayland, but it is AFAIK does not work with WMs and does not map Wayland windows back to X model.)