I'm seeing a pretty big imbalance between going on DD and on mage/support/etc., which leads me to a question: How in the world does momentum work? I suppose it accounts for getting 500-700 exp/bayld on a melee job, but I seem to be stuck in the 0-150 range on any mage job no matter what I do, or how fast. I'm intrigued by reives; I think it's a good concept, fast-paced, lots to do, but it seems that there's a glaring difficulty when one aspect is both necessary and well-rewarded, while the other aspects are necessary and very poorly rewarded (if rewarded at all, which is typically my case on mage jobs). I can see Geomancer being very useful for reives, though.
As a result, as much as the system looks neat and has promise, I'll probably hold off on doing too many reives until something changes, or until more information is revealed about how momentum works. Even if the Thurandaut set looks nice.