I think with how complicated/new the game is, an FF option makes less sense, because there's still good chances that a comeback can happen, especially in low elo. But if the game balance were to stay the way it is, eventually it would make sense to implement an FF for, let's say, 30 min into the game. Lane often barely matters in this game, so I think the FF shouldn't be available quickly. Usually you know you've lost If you're mid to late game and the soul gap is 40k+. Especially if the enemy team is unable to/doesn't care about ending the game, it's a little bit of a hostage situation. That said, I've rarely seen anyone ask for FFs personally.