Keyframing or pathing a layers movement

Is it possible to keyframe or manipulate the arc of motion on a layer?
The camera tool is wonderfully flexible and allows for creative pathing. I cannot find a way to add more that just a start and end to a layers motion. I have found a workaround but it is rather cumbersome when wanting lots of changes in direction (Workaround was -copy layers over in to new frames then copying the end key to start key etc).
As this kind of flexibility is present in the camera - is it or will it ever be available for layers?