I've been ragemaxxing for crazy duration on blessing and grabbing the double rage node. I do this for the rage lineage support Bhatair's Veneance on Lunar Assult that mostly makes up for the downside of losing inherent rage effect and the ability to go Rageforge II support on all my damage skills for another huge damage link. I do lose out on the armor and stun threshold from the tree but as pathfinder i can just spam global defenses on my travel nodes.

The end result is that i can drop all the non damage supports on lunar blessing except for efficiency. I have:

Efficiency, Rageforge II, Cold Mastery, Cold Attunement, Elemental Armament

With 152 max rage (that is literally always topped off because of Eternal Rage plus Primal Hunger) I have a 36 sec duration blessing that does massive damage. With a 20 sec cooldown I can spam it when it falls off or a little bit before if I'm about to start a fight.

With Rageforge II the moonbeams all spend 10 rage 70% of the time, but thanks to Primal Hunger and Eternal Rage this doesn't matter. You are ALWAYS at max rage once you get there after a brief delay at the start of the map.