Well I have learned a few things from my past Diadem runs:
  • Duty finder is absolute garbage with Diadem. People do whatever the hell they want whenever the hell they want.
  • Party Finder is not always successful either. You cannot kick people from groups, so if someone does not follow the PF rules you can't get rid of them.
  • Based on the previous 2 points. My recommendation is going with your FC or friends.
  • Participation is based on party DPS. This means you'll have a far easier time with 8 people contributing in comparison to 2 people. Thus more rewards.
  • Decide beforehand together if your group is a "Fighting Party" or "Gathering Party"
  • Most groups obtain flying and head to Dino Island if they are a "Fighting Party" (Shout out to people to gather them there! Work together with other groups!). Dino Island has the highest ranking mobs and a good chance at spawning higher ranked ones. Best loot can be obtained that way. Not to mention the fact that with more groups, more people you can clear more enemies faster and more effectively! This is more profitable for everyone as everyone will get more drops this way. General rule of thumb for my FC is that 150 & 180 gear is Greed, 210 is Need (We are quite lenient with it and if someone wants a specific piece; all they have to do is say so, we are friends afterall)
  • Gathering you can often do solo while sneaking around carefully. Be prepared for some deaths however.