Badge System Design Performance Levels

It was suggested I add descriptions for each performance level within the Badge System Design rubric. This is what I came up with...

• Exemplary
  The example for an outstanding badge system. Badge systems should aspire to be as comprehensive and as well designed.
• Notable
  A badge system that should be reviewed for their approach toward design and implementation.
• Working
  A badge system that is working and consist of a few badges that collectively represent an accomplishment beyond a single badge.
• Introductory
  The minimum for a badge system.