Thanks for the feedback Bruce which is very insightful. I can only agree with everything you say and suggest.

I agree that a one-week Sprint is good if done for the right reason and if the team has the mindset you describe in your examples. Many times teams, however, do it unwittingly and don't improve using DevOps, slicing stories, etc.

I think you can get fast feedback you describe in 7.1 if you get immediate feedback on every Increment released during the Sprint. Then you get continuous feedback and engagement. Would you agree?