>>275458876
Coming from Warcraft 3 modding, where player names could often prominently be seen in custom maps and were often changed to convey information such as roles, I can definitely think of a lot of fun and/or useful applications of being able to control even merely player names. 

I hope this particular one stays in, but I was just surpised they'd include such a function because it could also be used to fuck with people for real by assuming someone's identity outside of a gamemode.