Do you want to expose the "new mode" to the general user population, or would it be better to keep this as an undocumented (or less-well-documented) feature, and not clutter the current UI with it? I have the impression that this new mode is needed only by us at the U of R. Using environment values set in labkey.xml means the new mode is not exposed through the UI, and makes the impact of the change smaller: no change to Config class, no change to configure.jsp, perhaps no change to documentation. I'm also not clear on whether additional Config data members affects any database schema.

Andy