I don't understand what you're getting at. The idea is that people can see who is available for RP, so that you can just approach someone and start RPing with them. It takes the guessing out of the equation. Think of it as toggling on and off an "RP mode" that shows everyone that you're open for, and actively, RPing.
Third-party mods are a solution, but I'd much rather see the devs make additional features to support RP, for the sake of uniformity.