these are all great ideas, and i think they would all be very useful to aem. also possibly /nick or the colored chat to be brought back it was alot of fun for the ranks when it was around and this might encourage more players to get ranks
I think adding a new donor rank would be a great way to improve creative, so many players have extreme and are getting bored with it, adding a new rank could be a great way to keep alot of the extremes playing.
There is a problem with that, due to that the game doesn't know that you switched your username it still belongs to the past user (or your past name)