just wonder about that...ok..it is not stable and might break system..but why don't just put it there....it is up to user to use it or not.....

Well... they have been and are unstable....

Users which cannot handle the terminal and not using fusion-icon as starter
from terminal are totally lost, complete blind.

Tons with "whining" calls for help...

David Reveman has changed Compiz core 2 times and probably also this week.

For the moment everything is green

http://status.compiz-fusion.org/

The Screensaver is broken and the 3D plugin needs more work.
The screensaver can be installed with a community workaround.

i mean just put it in ubuntu official repository.....it may break...but as it is development cycle then just ignore whoever complain about it....