We've been down this road before (now defunct rating/star system) and it was an absolute dumpster fire. The official stance here is that it's not required and it will never be. This is for the simple reason that people will argue over descriptions being wrong and other nonsense that doesn't add any value. The reviews are focused on service and the whole experience and not so specifically about physical description. If there's an obvious problem, I'm sure it will be mentioned... I believe most people will report when they get someone that's obviously different than the pictures (bait-n-switch or 20 year old pictures) -- I see some of that in reviews already. As I mentioned before, everyone's description will be different and it just will create a bunch of noise when people start arguing about how wrong someone else's description was...