That's true - RailsAdmin only works with ActiveRecord, so we get the latter's lack of scalability and (sometimes) transparency. But, to some extent, it doesn't matter, since the use of RailsAdmin is limited to the links administrative domain, where performance is not really an issue. Display of the campuslinks API endpoint has a little more performance sensitivity, but it's cached on a global level, so again, not too much to worry about just yet.