Rolling back updates?

Red hat says you can roll back package updates using "yum history''? I have experimented with this and it doesn't always work. Imagine patching your rhel server with hundreds of updates. And the system becomes unresponsive after reboot. Ok here comes "yum history" to the rescue. Unfortunately, "yum history" was a fake rescuer.

Red hat has to do something better for effectively rolling back. Better yet, copy boot environments and live upgrade technology from Solaris.

Heck RHEL is awesome, but if you can't role back, its terrible. Oh yes, there is satellite server. But I don't want to use that. Give us effective rolling back. Call oracle to get boot environments and live upgrade.

Sorry guys I am frustrated.

Thanks