Tank BIS is crafted acc's, that's a problem.

[Felorr]

Yes, and?

Of course damage is second priority. However, most good tanks learned how to tank and do tanky-things forever ago, and frankly the mere act of holding aggro, positioning, and mitigating damage is extremely easy. So believe it or not, even aggressive tanks consider damage second priority, its just we complete our first priority very quickly and move on.

Sitting there dwelling on or struggling to meet that first priority isn't indicative of skill or being more in touch with tanking as a job, its just an inability or refusal to remove training wheels. Tenacity is the tread on those wheels.

Yes this. Positioning, Aggro, and managing defensive CDs for busters are obviously the top priority. And good tanks can do all of those things in their sleep. Even more so with things like Diversion and Shirk, makes aggro management a snoozefest. So what are you left to do? You start asking yourself "ok, how can I improve?"