I read Ian Jane's DVD review of The Myth (2 Disc DTS Version)
I also thought the change in direction in the middle quite confusing. It seems like they went to India just to say they went to India. I had high hopes for the movie and it wasn't as good as I thought it would be. I still liked it a lot, but it could have been better.
One thing, though, the commentary is with director Stanley Tong, producer Barbie Tung (not a moderator), and art director Oliver Wong.