It feels important to note that in the case of Wayland, it is indeed designed by the very seasoned folks that have worked with Xorg. If someone like keithp who

It feels important to note that in the case of Wayland, it is indeed designed by the very seasoned folks that have worked with Xorg. If someone like keithp who have worked with X since before X11 has opinions on the design, it is likely well informed. I think very few people involved underestimate the work involved to replace X, and that it is going to be many years before it is somehow done.