Alright, time to throw out an idea of my own.

Seeing as how the playerbase trend has shifted towards emphasis on DD'ing, it makes sense to continue that route. DD'ing has been just as much a factor in tanking as staying alive. That aspect became blatant with the introduction of Atonement (and the MNK tank in abyssea... although they were tanking things like salvage bosses in the past.)

So as a means of keeping PLD competant in it's own field, upping damage is the only realistic way to do it (besides the nerf bat.) Almace helps immensely with this, and while I personally think it's good enough to justify a PLD being in a party/alliance, others may not share the sentiment.

Anywho... on to the idea.
How about something along the lines of a job trait or ability that reduces weapon delay based on enmity? Something on par with NIN's tier of Dual Wield or MNK's Martial Arts traits.

But if that sounds overpowered, there could be a stipulation like if you fall below 50% or 75% HP, the trait is inactive. Said stipulation gives us incentive to use our magic (along with dmg reduction gear), rather than wait for the WHM to take notice and Cure V you. It also makes enmity spiking JA's more useful.

Just a thought.