Tank healing is to high

[TheOperator3712]

Because it's becoming more common and easier to do.

More common? Perhaps. It's been this easy for Warrior and Paladin for awhile now though.

The tank role includes those jobs and problematic designs that are the bottleneck right now and it would be better to first deal with (1) imbalances in skill/precision to reward in the tank role and (2) the sheer amount of passive defensive throughput available to tanks before tuning encounters as a whole.

I agree with your general premise in regards to tanks here. I think healer design will need to be addressed as part of this as well however.

And since we're on the topic of passive defense. Cast Tank Mastery back into the fire from whence it came!