When it becomes clear the game will be won by a team. The loosing team should have the option to surrender and end the game gracefully. Just quitting is annoying.
Proposal:
A surrender option in the game menu. when most players on a team pressed the button the game will finish with a victory for the other team.
on a 1v1, only 1 needs to press the button before surrender
on 2vs2, both members of a team needs to press the button
on 3vs3, 2 are needed
on 4vs4, 2 are needed
on 5vs5, 3 are needed
A notification is sounded when a member uses the surrender option