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Wayland. Touchscreen support and gestures. No scaling issues. Better smoothness.
And don't forget Crash-Resilient Wayland Compositing that keep applications alive even tho the "compositor" crash, so it does restart without any data loss and the lockscreen protocol, because on xorg if the lockscreen crash then you view the desktop and you have the device unlocked!
Wayland. Touchscreen support and gestures. No scaling issues. Better smoothness.
touchscreen and gestures are managed by libinput/evdev which are independant and works with X11, using it currently on my Yoga C340.
Good point. But I think it would be difficult to configure this bundle within GNOME/KDE. And it's not necessary. Almost everything works fine under Wayland right now.