> so if you want a different screensaver, you need to have a different compositor?
Or the compositor could have specific support for pluggable screensavers. In any case, I think that the Wayland compositor will end up being more line gnome-shell than compiz, so you may not have a choice anyway.
> the 'funny key combos cause the screen to unlock' were not an accident, that was a deliberate feature for debugging that accidently got enabled by default.
Except that it was a feature to release screen grabs, which ought to be harmless for anything except screen lockers.
> as one of those people who routinely uses X remotely, file descriptors have a significant problem ;-). There's nothing inherently wrong with cookies, just with the permissions being the same for all apps from a single user.
Presumably this will get solved the same way as the rest of Wayland remoting which, AIUI, doesn't really exist right now. Maybe magic cookies would still be better for the remoting server, whatever it is, to tell what privileges its clients have.