Greetings Pumpkin,
Once again, thank you for your suggestion! We're always looking for suggestions and feedback that can help us make Potterworld a better place, and we appreciate you bringing your idea forward!
I’ve brought up your idea up with the team and unfortunately, we are declining this suggestion at this time - this is not something that we feel needs to be changed. There hasn’t really been any confusion regarding the ranks and we believe that removing the “Jr." could cause confusion as the distinction between the two would become smaller. Again, thank you for suggestion and we hope that you submit more ideas in the foreseeable future!