Yeah I saw that, but it can only be rotated on the Y axis, not the X and Z. Therefore, this biases what is possible to sculpt using the brush. This mean you can only dig holes in the angle the camera is facing, like that :
Imagine using a 3D sculpting software like Sculptris or Zbrush, with only 1 camera axis rotation, this will be a total nightmare...
Oh and BTW , just to confirm to you : now I have music ! I don't know why I didn't hear it in the first place... nice C418 vibe guys