This would be a really great option, since I guess we all are running some kind of aggressive decks (sort of).

Like with my Warrior deck, I either win easily before turn 10 (or let`s say turn 12), or I lose in 20-30 turns which takes a LOT of time.

So, I would love to see an option to "Concede after X turns" when the game is not over by then...

Should be not too much work to implement I guess ;-)

That`s easier said than done. HP varies too much, especially in even matchups like vs. Hunter or Rogue where I take a lot of damage, but they take even more damage and the game is decided on turn 9 or 10 (both low on HP).
Also vs. Control - if they manage to remove all my things - we are both on high HP after turn 10-12.

As you can see, it`s not easy...but if there is ONE thing in common, vs. every class/deck the game is somehow decided after let`s say turn 12. If I`m up vs. a good Control style deck, it goes to ~30 turns with almost no chance of winning. This is a waste of time, as the bot stands no chance vs. good Control decks (runs in every trap there is).

I`d prefer a "Condede after X turns" in terms of using a rush (kind of) deck. Sure, there will be some condes where I could have won after some additional turns, but most of the time 12-15 turns is enough, no need for 30+ turns vs. Priests or Paladin...