Make Teams more fun and less horribly corporate and evil
In corporate settings, still allow me to be choose a friendly display name (but keep all the corporate **** attached to my profile). Or at least allow me to truncate my name to First and Last Initial, e.g., Bill J. or Sarah B.
Sean Ellis commented
The ability to set a display name is also required for the opposite reason - wanting to be known more formally as "Mr Armstrong" when a teacher is communicating with pupils, to use an example from another thread.