With so much confusion about whether a change in behaviour is a feature change or just regression:
If a software developer is using TDD or BDD, which every sane developer does (sadly not so much in the gaming industry), and he is doing a public testing phase, wouldn't it be cool if the tests or the specs would also be public? I am sure that way there would be much less confusion about the behaviour of the software/game.
Of course this would be utopia, in the real world even the developers don't know how their code behaves. Or management would think that its a security issue.