It seems clear to me that my posting a single new Technique, or even a group of related ones, isn't enough to get a good discussion going. So this thread is another approach: an ongoing thread for discussing new techniques, the technique rules, and ideas that might be techniques. Because Optional Specialisations and One-Task-Wonder perks are closely related to techniques, they're also on-topic for this thread.
Edit: because I hadn't said it in this thread, my New Techniques effort is about non-combat techniques, because there already seem to be plenty of combat techniques.
The rules about Techniques are summarised
here, and my index of techniques is
here.