HG5 makes sense, xp wise its only around halfway to levelcap. And you can hardly call yourself master and foster disciples if you havent at least reached HG5. Also there should only be a few masters and alot of disciples, maybe my viewpoint are colored by chinese martial arts movies, but seems a bit absurd when 95% of the server are masters, and discipleship only last a few hours. The system seems incomplete though. There is no obvious way to reach Rank2 or Rank1 master, and the rewards seems hardly worth the trouble. 10 disciples online at same time doesn´t add any extra bonus either.