I've been working on making the decision as to who I'll get to sculpt new genitals for me, and researching this on the web is a mess - every site comparing them is out of date, triggers my mental sketchy spam site detectors, or both.
It'd be great to be able to go to a nice-looking site and say "all I'm interested in right now is MtF genital surgery", then see doctors who do that, and crowd-sourced reviews if their work. (Other people may be interested in FtM genital surgery, breast augumentation/removal, orichectomy, you get the idea - various manipulations of genitals and secondary gender cues.)
I think there's probably less than a hundred people who offer these kinds of services in the world, so it's not exactly a huge database to worry about.