As Henry said Aikido is Budo. Being in an Aikido environment is not the same as being in a golf club, tennis club or in a work environment.In matters of addressing the teacher I have always used a formal address eg sensei to my teachers.If someone was in the service of Queen Elizabeth would the person be likely to address her as Lizzy/Queenie/Beth or whatever?I hardly think so.Do you think that White House staff call the President Mr President or Obama?
May I also point out that the current Doshu was known as Waka Sensei prior to his fathers demise.Prior to his fathers demise was he addressed by his colleagues as Moriteru??
Sorry, are you agreeing with me or disagreeing?
I was responding to the story about the students getting angry at being asked to call a teacher Sensei instead of using his first name. I.e., if someone asks you not to use their first name, or to use a title, or to use a specific version of their name, I'm suggesting you generally should do as they ask.