Currently when installing Decipher Licensing service for v2.1 there are two parts to improve:
1) Hide the password value (or make it visible on demand) when entering RabbitMQ user's password during installation.
2) Extend the characters limitations for the RabbitMQ password and RabbitMQ user values. Currently RabbitMQ and Decipher Licensing do not let though user name with other characters than alphas (issues as in automation most of user names contains alphanumeric values and some special chars as "_", "-", etc.), and the password field can not access special characters at all (only alphanumeric) which is reducing the security layer of whole solution.
NOTE: It may be a limitation on RabbitMQ side but as a business partner, you should be interested in getting this fixed if so.