Unique! It does not need too much improvement.
The impression of the song is like reading one of James Joyce's novel - the players fingers dance as the player's consciousness flows. Telling the truth, I do not think that you need to do too much improvement which may oppositely damage the image the song brings to the listeners. Just fixing a little bit is already OK.
Since I'm not a professional audience, I'm afraid that it is beyond my ability to give you any professional comments.