That's very interesting. Thank you for sharing.
Personally, as we were advanced enough to have an engineering department capable of using RMEP in-house, we also had a rather robust CMMS. All equipment records resided there, and that data was typically more vital to our mechanics than seeing something in 3d, and being tied to the work order and preventative maintenance orders.
The crafts stayed using 2d documents to track things down (the mepfp data from each project was copied onto a composite plan set for each trade, so they only have to look in one place, irrespective of project, obviously, with renovations, sometimes the most recent information didn't have all of the systems information anyway, usually just the newest modifications and tie-ins), and the engineering team would use the models for building troubleshooting and design improvements, which almost always involves editing.
There were only two workstations with rmep and amep on them (better graphics cards and more ram than standard), the rest of the viewing stations and computers had trueview and design review on them because they're just looking for data, not modifying it like the engineering team.
I don't specifically oppose having data embedded into the models, but, programs like Maximo and Archibus are, at this point imho, so much better at manipulating/importing/exporting/reporting on/managing the vast amounts of data needed to well maintain a facility. If it can be a two way street, where I can take my existing data and seamlessly import it into a model, that's great, but, if i'm going to keep it any one single place where the most people can access it, it's going to be my IWMS, not Revit MEP.
Unless I'm so far advanced I've got a complete and totally accurate master model(s) of the campus. But, that takes years of transitions, just as the switch from paper to CAD did, and FM budgets don't typically stretch that far (though renovation budgets are always there and must bear the burden). From 2009-2013, I'd say our campus was about 15% RMEP and 15% AMEP, with the remainder still in CAD. SO, Maximo it was for handling the data.
Obviously, every owner,
and every stakeholder within that facility, is going to have different thoughts on the matter, which is what makes this all so fun.