Originally Posted by Naoki_Yoshida

Why the claiming system will be removed
When considering large scale PvE content involving multiple parties and PvP between large numbers of players...

Securing reward rights
Up next is the decision on the right to obtain rewards.
This regards who has the right to obtain experience points, dropped items, and quest completion flags when multiple parties (including solo players) attack the same monster.
This is the only part that concerns me. I am imagining an FFXI Campaign and/or Beseiged type large scale PvE event where multiple parties and soloers are ganging up on Garlean Machina in order to "win" the event. If I gain nothing by helping someone else defeat an enemy, then why should I even try?

If there is no exp and/or loot dropped from each enemy but rather everyone is awarded exp and loot at the end of the battle, then I don't see a problem however, that means that the system does need to track each participants damage and/or healing to determine the proper rewards.

But if I get nothing for helping another player or party, I'm just gonna watch and hope they wipe, then try to steal the claim (esp. if it's an NM).