If you were going to implement the doubling cube, you would also need to award two wins for a gammon and 3 for a backgammon. Personally I think if you're going to implement that, let's just have 5 point matches.

I started the thread by suggesting that once the game is mathematically over then the game server should award the game instead of forcing the game to continue pointlessly. Of course resignations would help (I always resign if the game is mathematically beyond reach, why prolong the agony).