Absolutely agreed. I didn't even know this was a thing, having never played on JP before—until a friend told me very recently and shared an example screenshot of exactly how they were laid out. It'd obviously help a ton with populating more of the ad-hoc content with likeminded people, such as the Casino games (ESPECIALLY Blacknyack or Mesetan Shooter), recruiting additional members for trigger parties, or Rideroid quests without having to sit at the Quest Counder tediously refreshing the party search menu or start one fr
This is the aforementioned screenshot my buddy showed me. For the record, he told me that most of these are quite simply designations, they're just normal blocks with a recommendation catering to a specific piece of content in its name—as the poster above me stated as well, with the exception of Expert, which was also very clearly pointed out in the OP.