I also collect old models, centralized or not, in case they're useful in modern situations (esp intranet) for reliability or security especially. What do you think of Tannenbaum et al's Globe model as WWW alternative?

https://cds.cern.ch/record/400321/files/p117.pdf

I thought it was an interesting design that provided nice way of reducing abstraction gaps and rework in the various layers/techs. They integrated it with their Amoeba OS that ran on cluster of workstations w/ single, system image.