Topcop, that was my default screensaver as well. I'm an illustrator, and I found that screensaver mesmerizing and great for getting past creative blocks. The closest in the OSX mountain lion is a version that has photos sliding up the screen slowly. It's anemic in comparison to the old one.
Why Apple seems to have this knack for "fixing" (i.e. breaking) things that they'd actually gotten right. :/
Apple doesn’t routinely monitor the discussions. These are mostly user to user discussions.
Send Apple feedback. They won't answer, but at least will know there is a problem. If enough people send feedback, it may get the problem solved sooner.