Yoshi-P: "If you want more engaging content, go play Ultimate"

[Absimiliard]

Tank healing used to be a major source of healing required in the older expansions, your reasoning behind asking for this is so you, as a tank, are in no danger of ever dying. You're basically pushing the risk of dying onto the squishy dps because you can't be bothered to rely on the healer.

Tanks were healing sponges in ARR and HW. By Stormblood they'd begun picking up considerable self-sustain, and by Shadowbringers three of the four could mostly handle their own businesses. EW doubled down on what ShB gave us. And uh... dunno where you got the idea tanks are in no danger of dying thing from, considering SE has been on this "let's put a dot on the tankbusters" kick.

As for your question, a tank rarely requiring healing means single target regen effects are basically worthless. If you're pushing the healing requirements onto the squishies, that means burst heals are the only thing that work, dps also have limited defence values and limited HP pools, there is a small limit of how much can be stressed on the dps side. Tanks, on the other hand, can be stretched out much further. Sure, you can keep your broken self-sustain, but bosses need to bring back untelegraphed tank cleaves and crit autos, then you'll actually have a reason to have those tools.

There are numerous things in endgame content tanks won't necessarily be able to handle alone. If you're speaking of dungeons, then I would note only one tank is borderline immortal. The other three, while durable, will ultimately require healing on those wall to wall pulls if the DPS are lacking. All four benefit greatly from regen effects in all content.

Sure, you can keep your broken self-sustain, but bosses need to bring back untelegraphed tank cleaves and crit autos, then you'll actually have a reason to have those tools.

Yes, that would tend to be included in increasing mandatory damage. I did specifically mention changing fight design to force tanks to focus on self-sustain via more incoming damage.