Hmm, that's definitely something to consider. 10equinox, what would you think of expanding this site, giving dedicated sections to each Theta model, then sharing the technical section (that would cover the bulk of the underpinnings shared by all models)? It may be possible to create separate URLs and possible even headers, but share the core underlying database.
If that's possible, it would greatly reduce my maintenance efforts while allowing something close to separate sites for each model. It may actually grow faster as well since we would be able to share the information pool among all model owners. I'll look into that potential option, if you guys think it would be useful.