For data managers and others who will wish to use 'raw' data in flexible ways, the need will remain for simple methods to interchange data in its raw state. So the need for an 'Export as...' button where there is data in a system that clearly ought to be able to come out, is not much to ask.
SIF will over time provide the standard method for moving data securely between large external databases, and different data systems that work across a school. Ideally, data systems should snap together like Lego and provide front ends that allow one to work at a conceptual level rather than have to think about the nuts and bolts of how the system works.
We haven't reached this point yet so flexibility is needed. Data managers will still need low-level data handling skills as well as high-level information skills. Over time they may need to drop the former as systems become easier to use. Its a bit like feeling that we shouldn't need to be a mechanic in order to drive a car. Performance Information Systems haven't yet got to the same evolutionary stage as the motor car, so we will still need to pack a few spanners in the toolbox.