I don't see any usefulness for every Tom, Dick and Harry creating their own currencies. It will give rise to a lot of scams and ponzi schemes.
Also Emin Gun Surer seems to disagree that the code is well written http://hackingdistributed.com/2017/06/19/bancor-is-flawed/
His article is a blatant display of ignorance. Check the comment section of his article to see the discussion I had with him.