"Tanks and Healers do too much Damage..."

[Reimmi]

tanks and healers will continue to have to do meaningful damage until square redesigns tanks/healers to have to mitigate damage beyond tank busters, or predictable raid damage so healers have to heal more.
so probly never

[Barraind]

Tanks and healers will never be as popular unless they do more damage than DPS, at which point why bring a DPS? People want to see big numbers, and not have the responsibilities associated with tanking and healing.

Ive tanked and/or healed since EQ, and the only time I ever did meaningful damage was against undead, and that was all through gigantic crits every now and then.

Its true in this game though. This game basically takes things that are fun and interesting about both tanking and healing and says "we dont have that in our game".

tanks and healers will continue to have to do meaningful damage until square redesigns tanks/healers to have to mitigate damage beyond tank busters, or predictable raid damage so healers have to heal more. so probly never

This.

[Kalise]

Ive tanked and/or healed since EQ, and the only time I ever did meaningful damage was against undead, and that was all through gigantic crits every now and then.

IDK... I've had plenty of times as a Tank where I did meaningful damage.

EQ2 Shadowknight I did pretty beastly AoE damage.
Also... Swashbuckler Tank with Dagger Storm, Sunder and general auto-attacks (With Poison) were pretty good damage.

Anarchy Online had tanks doing decent to high damage, depending on the class, Soldiers for example could actually be one of the highest DPS classes in the game if geared out well (Dual Wield Pistols with Full Auto, Burst and Fling Shot). Adventurers could also do pretty good damage even while tanking (Though, not as much as if they were using Wolf form). Enforcers got decent damage from their Mongo's too.
Of course, a lot of the game can also utilize impromptu Tanks, such as the Engineers with bots that are 100+ levels higher than the enemies, Bureaucrats whom just mind controlled enemies to let them tank, Fixers who'd just have ridiculous evades and tons of HoTs... Or if you were feeling spicy enough, you could tank with your Agent by using Soldier/Enforcer skills (That's a really dumb idea though, since an Agents main weapon skill requires them to be hidden from their target. That however, didn't stop me )

WoW has had its ups and downs of Tank damage... Including times where I was matching or beating equivalent skill DPS (Vengeance was so dumb...)

Rift had Tanks doing notable damage. Not amazing, but nothing to sneeze at, even more so if you were able to spec into some offensive souls for some damage boosts.

Warhammer Online had Chosen and Knights of the Blazing Sun who could deal some significant damage, while KotBS could still main tank (Not as well as Black Orc... But Black Orc didn't do damage...)

City of Heroes/Villains literally had Brutes as the Villainous counterpart to Tankers whom did some serious damage. Though, you could also hit defence + resistance caps on Scrapper, Mastermind, Arachnos Soldier and Warshade/Peacebringer (Though Quantuum Soldiers made tanking as WS/PB pretty iffy) and thus be "Tanking" on a DPS archetype (Which was part of the issue with Tankers after they nerfed map pulls)

Lord of the Rings Online had Wardens which could deal decent damage.

Tera has Berserker and Warrior which do good damage as Tanks.

Meaningful damage on Tanks has been a thing for YEARS. Though, often found through complexity - Such as high APM playstyles or gearing strategy (I.e. Many high DPS Tanks from Eastern MMO's tend to focus on being mDPS whom tank through a series of invulnerability frames to mitigate the damage of attacks which requires good timing. While Western MMO's tend to focus of the highly damaging tanks needing to gear and spec well in order to access damage and tanking capabilities, often resulting in something like a "DPS" class being converted into a "Tank" one)