I would love one as well, but the only problem with it is, lets say, you have a really good session with a good massage and the limited GFE activities that you desire in this session, and someone reads your review, another guy have seen this girl multiple times and did not have the same "experience" as you, and he calls you out saying it is a fake review. It is a very slippery slope, especially when the girl you review is on BP, CL or does not advertise at all. The ladies who do advertise on this or other sites that they do the "service" wanted, there is no problem, But when a lady is a LMT or not, who does not have any reviews, you are alienating yourself from her as soon as she finds out you reviewed her, and the "usual way" she finds out is guys call/email her requesting specific services and then the guy calls your review of her out and she slaps you silly the next time you see her.
Trust me, I have experience!