Yes, totally agree. Came here to post this myself.
Tween Position (and "Punch" et al with position or rotation) needs a 'Space' option for World or Local. Would also want to offer an "additive" option (e.g. add a sine motion on top of animation that is already moving an object without overriding it).
I see in the Action code, it's currently just assigning the output to world (transform.position).
Lastly, does it want to also have a Rigibody.movePosition option as well for objects using rigidbody? I believe this way physics objects in motion from tweening act appropriately when colliding with other objects AFAIK.