So when do we get a report function

As a seasoned player (multiple legends playing since beta) I have run into this many times, Although today after not saying anything in a game no emotes from either side I get a typical salty friend request after doing nothing. When will we get a report function to discourage this type of behavior because people act like this all the time with no consequence.

https://gyazo.com/4f1864e90f7f39d3593471407979c31b