Comment 10 for bug 714043

"What's wrong with forcing the user to explicitly specify which system they want to access?"

I thought this would break backwards compatibility, but upon further reflection it would only break code that has been running against staging this whole time. Such code is already broken, though for read-only scripts there's a difference between "my script gets data that's slightly out of date" and "my script crashes with an exception".

Given the diversity of opinion, this may be the best solution.