I'm not too familiar with status-tracking in general, but it seems tags exist to cover all states of these questions: -deferred, -bydesign, -planned, -declined, -completed, -review; -norepro, -reproduced. Yet not every feature-request or bug question has one of these collectively inclusive tags.
So... why not? Is it just a matter of convenience? What does the default state of having no status tag mean? That it is just a bad question? Or that there's no consensus yet?