I believe a concede button would only be a positive addition if the other player allowed the conceding player. Such as "player 1 wants to concede. Do you accept?" with a choice whether or not to let them concede.
In the scenario I posted, he would obviously just say no and continue on. I'm not ...

My point is this: I'm hemmed in in a Classic game with only Eastern Australia left. I have 6 armies. There's just 2 of us left. He's got 20ish armies in Siam and keeps putting more on it. He's attacking the neutral player when he gets around to playing his turn.

Maybe it's me. Just finish it and ...

There really needs to be a concede game button. Without it, it's just takes forever to finish a game. I know if I've lost, why can't I just concede the game?

Angoth