Warrior is OP! Paladin is OP! Make one tank class and be done with it....

[Sephirah]

The trinity refers to roles, not group composition. They *are* designing content with an explicit ratio though: 25% tank, 25% healer, and 50% DPS.

Assuming they plan on keeping the same ratio as 4 mans for 24 is not that likely, that would be 6 tanks, 6 healers, and 12 dps. I've never played a game in existence that required 6 tanks for a fight. (could be interesting to see though lol)

As to there being content made that emphasizes WARs over PAL, I'd be curious to see you concoct a scenario that actually does so without it being horribly contrived.

First scenario I could think of off the top of my head is a boss mechanic that targets the tank and deals a set amount of unmitigatable damage. Something like that may require the HP pool of a WAR to absorb the hit, an HP pool that is just impossible for a paladin to reach.