I just took some time going through the guides and while they look like they might be good "installation procedures for environments with a large number of Exchange Servers" they don't look to address the mass number of installations that people will be doing.
First, there's this concept of the Configuration DVD. If I'm not mistaken, I have to create this from a large number of TechNet articles and make sure that it does something that really isn't well documented.
Next, the installation process goes through a number of what I'd call dubious steps (more like personal preference) for configuring the server. Items such as the creation of a D drive for the Exchange binaries and moving the DVD drive to the Z drive. (And in following the different steps, it looks like this isn't consistent).
Now it starts to talk about Hotfix application. But instead of using Windows Update, everything seems to be loaded by hand. Why not use Windows Update? Are there any updates that Windows Update doesn't load?
When it gets down to the application installation, there's like one line "Install the server"
Once the server is installed, the first thing that it does is to rename the Storage Groups and the Databases. If this is to be considered Best Practice, then why doesn't it come installed this way?
Has anyone actually taken these documents and set down and installed a CCR with 2 CAS/HUB servers from it?
And while I guess the Configuration DVD did this for me somewhere, the KB article that tells me what prerequisites to install on W2K8 seems to be infinitely more usable than these guides for installations of less than 6 servers.