What to manage as a tank?

[CKNovel]

Simply answer me that:
If your favourite role was an enforced burden on the party in casual content and a victim of player induced necessity in high end content would you like that?
Would you feel your role is impactful?
Would you feel like your WOL who is meant to be the strongest was adequately represented in your job?

Before answering that question, it's necessary to prove that it is a fact and not just your perspective.
And the fact are Healers aren't a burden or an induced necessity. They bring a lot of value to any group. They're just boring to play and not the navel of the party anymore.

Physical ranged are an induced necessity, if there wasn't a 1% role bonus, most player would pick another melee or caster, especially with the addition of pictomancer.
So to answer your answer, yes I wouldn't enjoy an induced necessity, I moved away from physical range because of that. But it's not what's happening with healers.

Tanks having healing spell every 180 s isn't a bad thing but at 25 sec ??????
And their heals is much more optimal than how healers do

You can pull data and prove this is false but amuse us:
Prove with data that "tank heals are much more optimal than how healers do".

And if you want to take something closer to XIV, just take a look at WoW. I can safely tell you Tank healing is waaaay more crazy than what what we have in XIV.
Tanks that heals are nothing new.