The handles of the move/rotate tool should be infinitely long lines so that you can make more precise rotations depending on how far you grab them from the center point.
The problem: If you want to rotate an object, you can often only do this very roughly because the handles of the move/rotate tool are too short. A minimal mouse movement results in a rotation of 10° or more. If the handles of the pan/tilt tool were infinitely long and could be gripped at any point to rotate an object, then you could make precise, small rotations by gripping the handles at a point far away from the pivot point and larger movements by gripping the handles very close to the pivot points. If the handles of the move/rotate tool were infinitely long, you could also easily align objects with other objects because you can immediately see where the handles are pointing.
Translated with DeepL.com (free version)