Perhaps this is something that has been up for discussion earlier and if so I apologize.
A thought that I had regarding the 0,1% title that is earned after the mythic+ season is to change it to be divided according to the class rather than all of the playerbase.
Pro’s / con’s?
Advantages: The possibility of earning a title not only with meta classes.
Disadvantages: In PvP, you’d have to do exactly the same.