Actually, I just thought of something.

One idea that they could work with involves taking a note out of their own book. Right now the 2.0 level 50 job quests give you the i90 AFZ gear for completion, so... What if the level 60 job quests did the same? They could issue out free versions of the most recently 'outdated' gear set. For 3.1, that would mean one full set of i170 unupgraded Doman gear plus the weapon for every fresh 60.

And then they can just update the rewards through the patches, as gear is made irrelevant by the most cutting edge content.