There needn't be any debate. Opinions aside, we can make two factual statements:
1) most women on SA are engaged in prostitution.
2)most women on SA are not advertising as sex workers.
Reviews won't work therefore, because they will provoke huge consternation among the women who are written about, and seriously endanger the people who write them - more so if private contact details are published, which is sort of the main value of a formal review system (as opposed to a thread where you can just discuss profiles, as we already have).
The one person I'm aware of who posted a review of an SA girl, in the UKP reviews section, desperately tried (and failed) to have it removed. That tells you everything. An SA review system will open a Pandora' s Box of revenge and outing attempts, police involvement and legal threats, and be a nightmare for site Admin and punters alike. Many men on SA have their photos on the site, which can be easily saved by women and shared anywhere. Can you imagine if the girls start "reviewing" us? It is already risky enough posting about your experiences on the open threads, frankly.