I know the reason hasn't been done is probably to discourage queue dodging
But the wait time before joining another queue already does a much better job of this.
Having to close the game and reopen it is just a pointless inconvenience.

It's no different than having the End Game button in games. also wtf why did this post twice

i agree. but more so after a queue pops after 4 or 5 min or even longer and you have to leave but a game hasnt already started you should have the opportunity to opt out so the team can find another available person waiting for a queue.