To be honest, I don't think it's possible to translate the richness, depth and refinement of the book Middlemarch to the screen. A narrator gives the most beautiful comments, which is why this book is such high-class literature. The narrator was 'George Eliot', of course, and she was so wise, funny and compassionate that the story is reduced to half without her comments.
It's remarkable how George Eliot has set up Middlemarch. Usually, the narrator is on the outside of the story, and the events that take place with the characters make the story. But not in this case. The narrator is on the inside. He knows about life, psychology, philosophy, religion and spirituality, and he connects all this knowledge to the small lifes of the characters.
So, without the narrator, what's left is precisely this TV adaptation. It's the outside of the story. It shows the most beautiful clothes, gardens, coaches, china, townhouses, and music. The actors tell the story by saying the words their characters do and mimicking the feelings that go along with them. It's not bad at all. But it misses the heart, the inside.
How can we get to the inside of all the marriages without the narrator? How can we get to the personalities of all the characters without the narrator? It's simply not possible in this case. Maybe, with some class A actors we had a better chance, but that's not the case, unfortunately. So, like the characters without the narrator, we stumble through this adaption, which is remarkably fitting in a way.
If you like to see the outside of this story, watch this series. But if you want to see the whole package, please read the book.