Why not just get rid of the exit option in 1v1 games? Where the only option is "Resign"?

@Vantha has merged above-mentioned pull request with commit c799e4221a. Thank you all for the joint endeavour!

In theory it's possible, but this would require some work. 

not that easy, dialog pages changed this alpha. Thanks, @guerringuerrin. Modern gui already updated this

IMHO, that would be a more consistent long-term solution. However, considering the technical challenges involved in implementing it, I don’t think it’s a bad idea to add this functionality in the meantime. (Correct me if I'm wrong but) It should be simpler to implement, would address a current need, and would also reduce the workload for the people who have to review replays in the Rating Disputes thread.