So then I started playing with Mandrake's drakTermServ application which allows you to mount the entire root file system of a server to multiple clients.
The heart of drakTermServ is a project called 'Cluster NFS' http://clusternfs.sourceforge.net/ It is a drop in replacement for regular NFS.
The big difference is that you can mount a subfolder of an existing mount, and can select the folder according to the IP address of the client, so for example two clients can mount '/etc' but each client gets a different version of /etc/X11/xorg.conf
I thought it could be interesting in a mini-myth environment so that clients can use the same file system as the server, except for those files which are specific to Mini-ITX
Just an idea:)