Would tanks be okay if SE swapped the damage between tank and healers?

[Shurrikhan]

No, it's not ignoring a damn thing. Nor is the OP even asking for... anything. It's a literal question.

Now, even if we were to swap maximum tank output with healers' maximum, that affects solely tanks' damage and, thereby, whether parties' rDPS is punished for bringing healers unnecessarily (instead of replacing them with tanks). It would remove that punishment without power creeping the game by taking about a sixth of tanks' damage and giving it to healers.

Because tanks still have about triple the Enmity and double the effective sustain (when including passive advantage, split across both tanks) necessary to make them an rDPS advantage to take 2 of (where an OT is made necessary due to twinned attacks, excessive splits, vulns, or excessive TBs in general; else, 1), this would only reduce it from an rDPS advantage to take up to 4 tanks (where more than 2 could be required for raidwide or spot-healing) back to the intended 2.

For a decrease in damage to affect tanks' ability to hold threat, they would have to be currently at risk of losing threat. Outside of gross incompetence, disconnects, or having less than 30% uptime, etc., they are not. For it to affect enjoyment, players would have to care solely about their personal output, as opposed to their rDPS indirectly provided. Doubtless some do, but that's not a preference worth rendering another role redundant for. A DPS may as well base their enjoyability of their role on their ability to solo current content or a healer on their ability to deal damage equal to a DPS; that's not a factor worth appealing to given its cost to so much more players, and so much greater degree, than it would improve even if such players made up the whole of their respective roles.