I wouldn’t like this I think… let me try to explain. And I speak for myself only.
I tanked Flex (current Normal) raids regularly back when. I even did Normal (current Heroic) . I always felt I was a pretty decent tank. Even solo tanked when it was applicable.
But for the ever life of me it was a pain in my butt trying to get tank Gold in the old proving grounds. I hated it. It made me feel like crap because others said it was so easy.
I feel that I would never have the option to tank if it was locked behind meeting a certain threshold that Blizzard tuned.
I would quit.
(Mini rant)
Like for real. It was night and day. I could solo tank that Dino dude as a warrior and the healers legit forgot about me. As in, actually forgot. I had so many stacks of that debuff at the end of the fight and they let me die and then all zoned out and left me. I was a warrior so with nothing left to punch I couldn’t gain any bubble or health back. They legit left me.
And as a Paladin solo tanking garrosh was a breeze.
But PG gold. Easily The hardest thing i have ever had to do in this game. I legit just beat some elite mob last night and realized that I had a 80% heal debuff and was taking massive shadow damage and it was easy to adapt and survive. I just had to put in a little effort. I didn’t even have to use GoAK… PG gold was easily 10 times tougher. I would hate to have to do that with less tools and have everyone else tell me that I just suck and should quit.