I haven't read the thread yet, but will right away.
I didn't enjoy The Testaments as I did THT. I also haven't watched the TV show, and I believe that may have had a disadvantage for me, apparently those who watched the TV show are more up to date with the characters(?)
Anyway, I thought it completely lacked nuance, instead of letting the reader see how women are treated and make the connection as to how they are worldwide, it's repeated and hammered into you. There's a lack of subtlety that is always there in THT.
I also had a few nitpicks. One being where it's stated to have in-laws who like the wife as otherwise they will always side with the man. It appeared to me Atwood completely forgot which world she was writing in, in Gilead, that's not an issue, of course the husbands parents will side with the husband, regardless.
I also do not feel the men would allow a woman, even Aunt Lydia, sole control of women and the rule, the women were their biggest commodity in their search to procreate, there's no way they wouldn't oversee every decision. They wouldn't allow one woman to assume complete command. It didn't feel accurate to the world of THT.
Then, for me, it was a bit of a plot hole that was created for THT.
The fact Baby Nicole was so well known worldwide, and she also was a big part in the destruction of Gilead, of course she would be well known, the fact she met up with Offred afterwards means that the end of THH makes zero sense to me, they would have easily have been able to know who Offred was after her children's escapes and reunification.
Another thing is, there's a less is more advantage with these kind of books, when your mind is allowed to fill in the blanks, it both puts you into the world and seems more threatening. The expansion of it at times made me roll my eyes.