There is currently exposure bracketing, focus bracketing, and white balance bracketing (the need for that one mystifies me).Makes sense. But then, I have to ask about your statement that ‘you can bracket a lot of things’. Other than exposure, and more recently focus, what can you bracket automatically?
FWIW, I’ve done plenty of aperture bracketing when doing lens test. A dial clicked in one direction, the other dial clicked in the opposite direction, shoot, repeat.
It would be useful to also have aperture bracketing, speed bracketing, and ISO bracketing. Then you would have the ability to bracket all of the main controls of photography if you wanted to. And for the record, the focus bracketing should allow you to bracket around (+ AND -) your current focus setting (such as eye AF) when the exposure button is pressed.
I have to manually do aperture bracketing now. It is one of the most important things I do. I just want the ability of the camera to do it for me, just like a lot of other great camera features that have been added.