Originally started trying to answer @moul's comment: this number looks scary: it's 2 too much for some people; it's 10 not enough for some other and it's completely incompatible with the fact that you don't own your in progress column if someone can review your task and move your unfinished task to in progress we should definitely encourage something instead of enforcing and a failed PR should go to TO DO, maybe I tend to agree with you, together with the other "magical numbers" on this file.