Learn you job

[Hoshikogi]

The the reward rank system is based almost entirely on enmity generation. And who generates enmity better than a Tank job. Flash --> Flash --> Flash --> Flash --> Flash --> AFK 30 seconds --> Gold Medal Item Get! Healer's have it good as well as long as their party tags various monsters and they use a simple AoE heal constantly.

[Kitru]

The the reward rank system is based almost entirely on enmity generation.

It was like that at release, but they changed it a few patches in so that there were more factors. I'm not entirely sure what they are, but I know that, while I used to be able to get gold while solo by spamming Overpower a few times, it requires a lot more than that now. I *think* that they did something where damage, enmity, healing, killing blows, and initial tags are all factored in somehow; I'm not entirely sure, but I do know that it's not just based upon enmity generated any more.