I fully agree and understand what are you talking about. There are some games, in which i was spamming shield/defence skills only to hold my HP at reasonable level, or to simply have more chances to screw up. TERA is actually a good example. I was playing as Warrior (two swords class) focused on tanking skills. There was no option to hold hate & evade shit and deal dps damage. But heals are recieved every 10 - 20 sec, so it was totally different game.
In FF, there is constant flow of HP restoration, there is that mentality, that even if i get 75% Tank Buster, i don't have to struggle with 25%HP another 15 sec, before i get a heal.
I kinda miss the tanking struggle, the real challenge!
Let's be honest. FF XIV has no challenges for tanks, only for dps'ing and healing. You watch vid, You learn when, where and how, you pop CD with right timing,
you may even make yourself a to-do-list on a self-adhesive card and stick it to the monitor to do not spam your memory with excessive info.
Because you learn fight by heart and simply follow steps. Even if you get Tank Buster... You know you are fine. The tanks problem is to be a tank, when mentioned Buster is coming, thats why WAR is so much easier, since the stance dance allows for a tanking, that this game needs: In opening, so damn BLM won't steal aggro on 2nd Fire IV; and later, during tankbusters.
Tanking is a moment.
If not the critical damage you may recieve, game would be simply fully predictable, no stress at all when lower than 25% on hp...
If Sephirot had RNG for order of his attacks, i would probably sit in Grit with brown trousers, so nobody would notice if i had shit myself.
BONUS:
Do you remember Stone Vigil (Hard) last boss? This is also a kind of tank-less boss i fell in love to.
Reminded me of Monster Hunter series. And kinda made me sad, since that was the only time i was using cooldowns so intuitional...
Now, another idea of making parry usefull, is to simply add Resist Critical statistic to attacks you parry.
600 parry allowing you to recieve 6% lower Critical damage?
I would meld half of my slots with parry, if not all.