Yeah nowadays they usually fall only into two categories:
1. Did you withhold at least 1 of your CDs for this instead of using it to decrease incoming damage? Ideally 2, but 1 works.
2. Have you put Provoke on your hotbar for a quick tankswap or are you a Warrior and can just invuln each instance because your invuln CD is too low?
They've become too formulaic. Every so often we see something semi-clever, like a 15s+ DoT that kills you if you also got the debuff from the second hit, so even if you invuln you die a few seconds later. But with autoattack damage being ignorable already (since bosses rarely have time to AA) and tankbusters being just a "did you withhold CDs"-check, it's just... boring.
If nothing else, I want tankbusters to be unreliable! Any AA has a small chance to be "upgraded" to a simple big hit with a short cast bar, meanwhile there is a PPM-limitation for how frequently this can happen so that if nothing else, the OT can always grab the boss and use their timers (cast selects target at the end, as it just applies a short buff making the next AA be a big hit).