This was the setup I was working on. Ideally it would come in a few flavors.
Flat file-no DB needed for static only websites. Addable later.
The base components:
a) jeos php nginx b) jeos php hiawatha c) lamp is not an option-too big-complex
The application layer: Any small fast CMS-easy instructions to add after install. Basically just drop the expanded .gz files into /var/http/public and off one goes to build. Very low hardware required...say P4-512ram-10GB hdd. Some would get it to work on less I'm sure.
Great little server for old spare PC's. Would bring in that whole user segment. :)
a) Banshee b) any php-based framework c) Pluck
Simple, very fast, and tested secure against standard attack vectors on 1st boot. Fun?!