As for the argument of power consumption i believe its up to the user to decide.
The purpose of an OS is not to entertain your office neighbours. By your reason for beauty; maybe we should make a dialog in Fedora whenever you home partition is decrypted, like this:
Count me in with the "screensavers are useless" crowd. I think '98 was the last time I even had one enabled on a machine.
Oh boy, let screensavers die along with crts...
Last time i used a screen saver was at a party. Projecting it on the people with a DLP makes a great substitute for laser
They may be usefull for some other specific stuff, but mostly not
I do set up the screen saver and monitor power off to a dt of 1 min between them. This way if i need the screen i have a "warning" before the screen goes off, so i can save some power cycles to it and maybe prolong its life this way
Whether or not you believe a screensaver should display a beautiful image or animation or not is one thing, but when you lock your screen so it prevents people from either being able to use the machine or read the contents of the screen, it needs to do that properly and reliably.
The way things are now, if you can arrange it so that the screen saver process dies, bingo, you're back in to the machine. But even if you can't manage that, usually when you hit a key after the screen saver has been started, you get a flicker of the contents of the screen under the screen saver. Not very private, and is one thing that will get addressed by this improvement.