I pointed my db access editor at the Admin collection. Everything opens fine. I then tried setting various crRud modes on AccessModes, Schemas, and Developers for other roles like anonymous and author. The requests went out fine to the server and came back with success. However, if I come back, the UI shows none of my edits actually took hold.
I think the server should be explicitly rejecting developer edits that muck with the access mode permissions on the Admin collections themselves. Unless we think developers should be allowed to play with the access levels of other roles to the Admins db?