A great addition to RtP would be a "looking for clan" preference. Players could check a box indicating that they are searching for a clan for a particular game, and then clans would create profiles that match their core values. These clans could then search for players who are similar to their preferred player types, and contact those who have indicated that they are looking for a clan.
This feature would instantly add appeal to RtP. Spam could be avoided by limiting "looking for clan" to individual games, including reporting features for spam/phishing, and only displaying players who have a high match % to the clan's profile.