I find the annotation cumbersome and too complex, there is always something to click instead of being able to simply see a plain bit of text.
A simple piece of text (It could look like a piece of paper) would allow us to label components and provide design notes. This would make homework easier to check and also instill a good practice of documentation.
It could be a 'component'. It only has a text component for display and does nothing in the simulation.
Components already have a name, but I don't see any gesture to show them in the circuit, they only appear in the parts list