Really gorgeous models there! I am sure this will help many map authors, especially newbies who want to quickly realize a map. I have one question regarding the modules: You said that they are modeled. Does this mean that these structures are non-sealing? If so, it would be good to mention it somewhere, so people know that they have to add some sealing geometry beneath the models, as visportals would not work and (if they only create a house without an exterior) might get problems with leaks. The more experienced authors will know this, of course, but newbies might get thrown off by it.
Another question regarding the sorting (this is actually for DR in general): Is it possible to assign two different "editor_displayFolder" spawnargs in DR for the same file? This way, if you are not sure if a model fits in category one or two, you could just add the respective model to both folders.