Just remove healers.

[Semirhage]

Then maybe they should solve the real problem? Tanks defensive skills should have nothing but damage mitigation tools, not a bunch of self healing tools.

I'd say absurd tank sustain is *a* problem, but I'd hesitate to call it "the real" problem. Delete tank healing entirely, and what do you get? A few more GCD heals, then you're back to 1111111111111.