Now that we have a category for #feedback, we might as well have a subcategory for feedback on Qubes itself. We might collect some nice user stories and critiques. An example would be something like this post on qubes-users.
My only concern is that some users might confuse a “Qubes Feedback” category with #user-support . But that may be a remote possibility and if it ever happens we can always move the post to the right place.