Interesting thoughts.
I am on http://steemitboard.com/board.html?user=globocop, which offers a reward badge for certain achievements...

However, I think it would be nice to implement a goal-setting by a user... which could function as a milestone / roadmap to whatever achievement the user values most...

Why not build it into eSteem?
https://steemit.com/voting/@globocop/vote-liberation-take-back-control-with-esteem