* VNC is covered by wayvnc (unless you're on GNOME or maybe? KDE, but those have their own implementations)
* ssh -X should be covered by waypipe
* application software should generally work in XWayland (which okay is a little cheaty but if it works it works)
The two pain points I'm currently aware of are:
* Unified vs fractured ecosystem: In practice, everyone on X11 used Xorg and every window manager and desktop environment had the same basic features because of it. You could always control the keyboard layout via setxkbmap, every screenshot tool worked everywhere, xrandr/arandr were always available to configure displays, etc. In Wayland there is never one answer to anything; not every compositor lets you configure the keyboard and if they do each one has their own way to do it, there are 3 different screenshot protocols (supposedly KDE and wlroots are converging so only GNOME will be doing their own thing but I'm not holding my breath), display configuration is completely up to compositor choice, etc.
* The accessibility story isn't there. There's work on it, so eventually the outcome will probably be "just throw out the a11y tools you're used to and switch to these new ones", but for now the current status is "they're working on it but it isn't there yet".
* VNC is covered by wayvnc (unless you're on GNOME or maybe? KDE, but those have their own implementations)
* ssh -X should be covered by waypipe
* application software should generally work in XWayland (which okay is a little cheaty but if it works it works)
The two pain points I'm currently aware of are:
* Unified vs fractured ecosystem: In practice, everyone on X11 used Xorg and every window manager and desktop environment had the same basic features because of it. You could always control the keyboard layout via setxkbmap, every screenshot tool worked everywhere, xrandr/arandr were always available to configure displays, etc. In Wayland there is never one answer to anything; not every compositor lets you configure the keyboard and if they do each one has their own way to do it, there are 3 different screenshot protocols (supposedly KDE and wlroots are converging so only GNOME will be doing their own thing but I'm not holding my breath), display configuration is completely up to compositor choice, etc.
* The accessibility story isn't there. There's work on it, so eventually the outcome will probably be "just throw out the a11y tools you're used to and switch to these new ones", but for now the current status is "they're working on it but it isn't there yet".