In that case can we make all tanks the same by giving them an actual tanking tool, the cone AoE on opener. Cone-->circle AoE's is just proper tanking; if they wanted homogenization this would have been the only thing to make sense.

Either that or my suggestion to just give us BOTH AoE openers, two separate actions. The casual tanks can leave the cone off their hotbars, while those of us who understand proper tanking and actually WANT to take the time to position mobs properly for the rest of our team, we can leave the circle off our hotbar. Simple easy painless fix and everybody wins. Why not?