What annoys me is that they don't publish the criteria for being in each tier, so those with lower rates who are in a higher tier can feel justifiably annoyed because there has been no explanation why. It also means that even if you see the numbers in your area drop dramatically, you have no idea whether your tier level will change.
Those of you who want to avoid all contact until next summer at the earliest will have no problem which one you are in, but for pubs, restaurants, hotels and theatres, it makes planning impossible and will cause many heartbreaks and suicides as there is no forseeable way out.