Alot more goes into a "well managed" base OS build design beyond booting from the OS media and then "Next > Next > Finish." The content of this post is the outcome of many fruitful whiteboard sessions around Windows base-OS builds. Some of this applies to physical servers only, some to virtual only but most is applicable to both. Many customer's build processes were designed/built circa Windows Server 2003 and XP or earlier. Alot has changed since then.
Have a look and see if some of these points don't get you fired up about expanding and/or improving your own base OS build system/processes.
Rule #1: Document everything.
Consider creating a SharePoint site for build information/documentation
Logical/physical drive setup
Go through ALL BIOS settings and understand them
Go through ALL Controller settings and understand them
Well, I've pretty thoroughly tested out the "bullet point" feature of the blog editor.
Ping us back in the comments and let us know what works/doesn't work in your experiences.