In my experience, I have never seen anyone recruiting for Naryu Sanctum or Dollhouse use LFP in the dungeon lobby. Mostly they recruit thru forming a party and stating gear requirements or in faction chat for those dungeons. TBH, I have never run either of those due to the fact that the no one ever wants to teach you to run them whether you have the gear for it or not. Granted, players should be locked out of dungeons they don't have the gear for, but there needs to be a happy medium that will allow players to at least learn the mechanics of running the higher dungeons. I am just now starting to run Cathedral, Hangar, and Stonescale so even though my main has 2400 AP, I don't know the mechs of those dungeons so I am hesitant to join for them. I have watched YouTube videos of how to run them but that rarely helps very much in the actual running since people hardly ever do the mechs as shown in them.