I'm in the mood of throwing my two cents here and there. So here I go.
Frankly, I feel very fortunate that I maintained myself away from spoilers, possible spoilers, previews, even trailers and commercials for TDKR. When I went to see the movie I was almost the same as I went to see TDK, in blank about the film. And I enjoyed it thoroughly. I was genuinely surprised by all the twist in the story, even the Miranda/Talia betrayal. And at the end, when the lady names Blake first name as Robin, I felt happy. Why? In another time, I felt that the use of Robin would not felt right with the tone of the films. For the concept to work right, it would need a lot of development and to work within this Gotham City. As I watched the film, I had no idea whatsoever who John Blake would be. Hero? Villian? Someone in between?. But as I have been doing with these films, I gave it a leap of faith. And it was rewarded.
As the film progressed, I initially saw Blake as a partner for Gordon, someone he could trust. And then came the scene where Blake confronts Wayne about his true colors. It reminded me of Dick Grayson and Tim Drake. His past had a similiar feeling as the past of Dick Grayson, and he deduced Bruce Wayne identity, though more like a shot in the dark that ultimately was recognized by both men tacitly. As Dick Grayson, Blake was a reflection for Bruce Wayne, and as Dick Grayson, Blake grew up with Batman as an inspiration that make him a better man. By enrolling himself in the GCPD to help people. Then we see that sometimes he has a temper. He doesn't like to be unheard when he thinks he is right. He is a little impulsive and as Foley puts it, he is a hot head. It reminded me a little of Jason Todd. Then as the film progresses, we see how he struggles to survive in this new state of living in Gotham, working with Gordon for a plan. And when Batman arrives, he takes his orders without questioning them, along with some witty banter, that again felt very Robin-y to me.
But I was reminded that Nolan wouldn't use Robin, but no one said that he wouldn't use the concept of Robin. So I made peace with myself and thought: "Well, John Blake is Nolan's Robin" at least for me. At the end, naming him explicitly as Robin, I felt validated somehow. Having him inherit the Batcave, reminded me of Terry McGinnis. And it was great because in the end, he was not Dick Grayson, nor Jason Todd, nor Tim Drake, nor Terry McGinnis. He was a character that embodied the same spirit as these characters. Someone who is inspired by Batman, and made his live better. Someone who could succeed him if he is needed in the future. He was Robin.
And well, it is not like he would put in the cape and the cowl instantly after that and started to fight supervillians at the same Bat-Time, same Bat-Channel every week. He is a capable man, one could asume a well trained cop, and most importantly, he has a heart. It wouldn't be farfetched to say that he would prepare himself so one day, if the Batman is needed, he could fill that place. I liked that he served as a point of view character too. The audience could relate to him. I liked the scene in the police chase, where Foley is trying to capture the Batman, and he belittles and insults him, with Blake silently hearing, obviously annoyed. It works in a meta level for me.
Joseph Gordon Levitt did a very good job at making Blake likeable, and its one of the reasons this works so well. I entered the cinema knowing nothing of him, and I was invested in his character, so I say it works. In my opinion, it serves the story, and is respectful to the spirit of the character.