Naming a photo is always tough. I sometimes feel that naming them is a fruitless act, only because if the name isn't exactly right, it is to the detriment of the photo.
In this case, I like the composition the way it is. I did crop some rock from the far left side to give it a more balanced look. Personally, I don't believe the people are meant to be the main focus, just that it is a story of two people taking in the breadth of the maginificent canyon. I believe it depicts just that. As to the best name, not really sure.
Steven. Beautiful location. My nit would be that the title is 'VISTA' and it feels to me that the people are in the way. If indeed you thought the people were the interest point, then I would crop some of the vista and make the people the focal point. There is not enough interesting information on the people to make them important in the photo...to me. Just a point of view.