I recently watched the commentary on the blu ray and have to say that I looked forward to whenever Frayling would start to speak again.
I have heard a few people complain that on the OUATITW commentary, Frayling sometimes simply narrates the plot, but I really don't recall that. If it is true, it's only on OUATITW. He also neglects to mention in the "Harmonica Rising" scene the history of that scene being removed and re-inserted. But the whole commentary of OUATITW is a mess cuz of the "commentary by committee" bullshit. I don't even know if Frayling recorded a full commentary and they only used parts of it, or if he was told which parts of his they would use. This commentary is such a motherfucking mess, it really irritates me. This movie -- as all of Leone's movies -- really deserve a full commentary by Frayling.
On the movies where he has done a full commentary: COR, FOD, FAFDM, DYS, and GBU (blu ray only) his commentaries are always amazing and full of useful information, he virtually never reverts to narration, nor he does he leave much dead air. Not to mention the fact that he has a great voice and great commentary style; all of his statements sound like they are coming from memory, unlike some other commentators who have written prepared statements and sound like they are reading off a paper. Even aside from all his knowledge about Leone, Frayling his my favorite commentator just for his speaking style. eg. he gave the commentary on one of the dvd releases of The Magnificent Seven -- this one only http://www.amazon.com/Magnificent-Seven-Two-Disc-Collectors/dp/B000BX0VRI/ref=sr_1_2?s=movies-tv&ie=UTF8&qid=1361976742&sr=1-2&keywords=the+magnificent+seven+collector%27s+edition
-- and I absolutely love it. he is definitely my favorite dvd commentator ever, just for his speaking style, even if he had never done a Leone movie.
Anyway, what I'd really love to see, but it's a dream, is for someone at Paramount to actually say, "This movie, which many people consider to be the greatest Western ever, deserves an unbutchered commentary" and have Frayling record a new, complete commentary for some future release. But I'm not holding my breath.
What I am hoping for, and what I think there is a realistic chance of, is to have Frayling record the commentary for the new restored version of OUATIA whenever they get around to releasing it in English. Now THAT would be awesome