Tank skills can be scale with Tenacity

[CaedemSanguis]

Just double/triple the damage mobs do in dungeons. Now the tanks need more healing and more base mitigation that tenacity gives.

unless FF14 improve their netcode you'll never need defensive stat melds (unless it's a better dps gain)

currently the damage output is based on 30s-1mn-2mn cd's
even in criterion savage (which is already too hard for common folks, you dont need to meld tenacity because of this)