I was involved in upgrading of thousands of reports from Reportnet or Cognos 8 to Cognos 10.
And had to come up with some creative ways of using IBM Cognos Lifecycle Manager.
Unfortunately it has limited reporting capabilities.
Therefore I created Cognos reporting on LCM data ...a little extreme :) ...
I thought that the result of this work might be useful for other similar projects.
http://ibm.co/NNCSO6 (shorten version of https://www.ibm.com/developerworks/mydeveloperworks/blogs/cognos_lcm/entry/ibm_cognos_lifecycle_manager_reporting?lang=en )