@clacke I agree with this sentiment, it does feel a roundabout way of looking at it and I haven't dug deeper into the forums to understand more about background or how it will actually appear in the interface.
What I would find interesting is if the idea is a view showing quote posts that is separate from the thread view but easily reachable from the thread view.
It's not unlikely that I would be interested in your tangent if I am reading the thread.