Two of the tactics which were used that I remember were:

1. Players would bring over mobs that AoE'd and attack them while their AoE would be aimed at PLD or WHM.

2. Healing bombs, the LS without claim would Healbomb the PLD tanking the current NM which they wanted and build up emnity against the NM.

- I don't even understand why they are making a claim system like the one stated above with the rewards for helping and what not if they were not planning for Open World content. I could see one of two things from this,

A. They are going to allow Free Company members to join in and assist with instanced battles even if they are not in party. May not be all instances but some.

2. There will be open world content and competition.