I would agree with the comments reference Callsign only on first contact. Theres nothing as irritating as someone giving their entire story on first contact, you've missed the first bit of the transmission and have to ask them to repeat the entire thing again. I know its in the book but seriously, who thought that was a good idea!
On another point I notice transit aircraft sometimes doing exactly the same thing, you get the entire transmission on first contact along with several waypoints and its just a nuisance.