Why does Image rotate only allow 45-degree increments? Can you allow us to rotate to any degree?

I am working on a task where rotating an image by 45 degrees is nowhere near precise enough.  I need more precision with the rotation within the scene, since it is mean to follow the orientation of the phone.

The functionality I'm trying to recreate is somewhat similar to a compass: no matter which orientation the compass is turned, its arrow always accounts for it and rotates relative to the frame, so that it always points north.  Similarly, I want to be able to rotate an image in a scene so that it accounts for the orientation of the phone and is always facing the same direction regardless of how the phone is rotated.

I can't do that if the Rotate Image task only lets me work in 45-degree increments!!  Can we please rotate to any angle?  And if not, is there a reason?  Does it cause problems?