I would really like to get the @username displayed under a person’s name next to the avatar; the same as these forums; some of my forum users have changed their display names and its making it less user friendly when people try to use @username to get someone’s attention through mentions.
I have read all the info from @johnjamesjacoby above; but it kinda went over my head; ideally I’d love to know exactly what php file to edit and what code to insert and at what specific line/area of said PHP file 
if possible!
Hope someone can help! thanks!