How is this still not a thing. Quality of life is killing this game. Not being able to talk to the other team makes it feel as if you are fighting bots. This game is dying and it could be saved. Social interaction and community building are important for all massively online games. HOTS supports none of this.
This topic has been discussed since the games creation. Overwatch and WoW are shining examples of player interaction. Failure on Blizzards part.