Honestly, this thread shouldn't target Turn 2.

The OP's problem seems to be that less and less tanks are getting through content in comparison to healers and DPS. If that's the case every single turn can be done with 1 tank. Ifrit HM can be done with 1 tank, as can Garuda HM and Titan HM.

The only places that can't be done with 1 tank are bosses that require tank swaps, such as Ultima HM.

Tanks have it extremely easy, even with this issue. They can create their own party with 1 tank and no doubt 4-5 DPS will join within minutes. Healers come pretty quickly, too. I've also never had any issue finding a tank for any turn of Coil.