I'm trying to achieve this kind of stacked rotation that you would get when using an array modifier on an object and having the offset controlled by another object.
This is for a spine of a character. I want to be able to rotate the hip (torso) bone and have every children bone rotate increasingly more compared to hip bone.
Another way to look at it would be that every children bone would have the same rotation value in relation to children's respective parent. But because every parent (except the first one) is also a child, the rotations would stack.
Here is a video demostrationg the effect achieved using array mod and obj offset https://youtu.be/1Dm_htzlVrM