So, harkening back to an old thread from a little over a year ago, SE might not be satisfied with the fact that progression-level tanks "need" to stance dance to be successful. But the problem isn't tank design here so much as encounter design.

Fights in FFXIV require dedicated tanks specifically and exclusively because of tankbusters. The white damage they do to tanks is simply not enough to usually require any more healing than Regen plus the occasional Cure/Cure II (this may be different in Savage), and usually the damage that tanks take outside of tankbusters is comparable to the rest of the group. Especially when this is coupled with tight DPS checks, the push for maximizing tank DPS is natural - since they only need to be "tanky" once every 30 seconds, they can spend the rest of the time maximizing their output and contributing more to group success (this is also why Parry is so undesirable - there isn't enough incoming damage to make it worthwhile in most cases).

If they want to change it, they will need to up the ante for how much damage tanks take, and how frequently. "Death by a million needles" would need to be the mantra--but in this case, too, they'd need to adjust how tanks work (though not in a way to eliminate DPS stances--that would be silly, and more something Blizzard would do). Instead, I imagine we'll see a few PLD skills revisited, as well as an adjustment to the combat table to make Parry more desirable.

In any case, I don't imagine we'll see too much of a change to either of these things. SE is a lot more iterative in their changes than some other companies, and they have tended very well to avoid overshooting the fixes they need to make. Many very strongly like this DPS meta, and it would do them well to consider that as they move towards Stormblood.