I sure hope they manage to sort out an interface (or even an off switch) for the compiled-in touchpad gestures in KDE Plasma-Wayland that even override Touchegg, not to mention the font rendering that has been glitchy for literally years. Those are the two main things keeping me on KDE Plasma-X11, and which will see me leave KDE for something else (XFCE? NsCDE? IDFK.) if they remain unresolved after the X11 session is removed.