The "tenacity" Problem (other melds aswell)

[Rithy255]

The only game where "Defense Value" mattered was Classic World of Warcraft, where you had to meet a certain threshold of +defense to mitigate crushing blows which could randomly onehit you as a tank. But FF is focused on boss mechanics and not rng crap that could kill you for doing nothing wrong.
The upside of having more DPS just outvalues everything defense could ever give you.
Kill a boss fast enough and you can skip entire mechanics, and as mentioned before it allows for mistakes like death or damage down, there is never any situation where you could wipe because the tank takes too much damage, but you will wipe because the tank does not enough damage.

I mean a tanks defensive value over having more DPS, would be to save healer GCD's which relates to how DPS works in this game, Issue is you never GCD heal on healer because healing is very low and healers already have more then enough resources to keep full DPS uptime, even having a tank that can be more forgiving to heal.

In reality damage only matters to the extent it helps you clear a fight, most fights don't really need the tank to maximise their damage either (I don't know what you're able to skip either on recent fights), DPS gains are the best stats because defensive/healing value matters so little, not because doing slightly more damage when you would have cleared overwise. Utility, ease of use, defensives that saved gcds is something that used to matter more when learning a fight So theirs a lot more then just damage that used to be important.

I think if tanks want to be focused as "blue DPS" design wise then they need more interesting rotations instead of being boring DPS, where you only meld RNG Crit/DH stats theirs nothing really interesting about the current design and it does have a lot of issues, If The game focuses on only boss mechanics and dance fights what's even the point of tanks and healers in the first place. This middle ground approach to the design doesn't make any sense to me.