There is a new TechNet blog specifically focused on IT Pro Content for SharePoint. http://blogs.technet.com/tothesharepoint/ provides notification and updates for the SharePoint related TechNet content and a vehicle for you to request topics and provide feedback to the Documentation Team. Next time you find yourself struggling to find content you can bounce to this blog and let them know! The writers on the team are passionate about providing the best content they can to you. They want the quality to reflect their own high standards. Omissions are usually due to "no one asking THAT question", once asked, the documentation will follow. I have found the team to be VERY interested in real-world deployments and scenarios that are not addressed by the doc. Tell the team, they listen!