Turn 5 seems too difficult

[kukurumei]

With the echo, Turn 5 only has three difficult parts.

Conflags. Echo makes killing them easy but people still need to pay attention and do the pet soak right.
Divebombs. Everybody needs to stack in the right spot and move at the right time.
Twisters. Everybody needs to be good at dodging them. Even with echo, 1 dps down is all it takes for dreads to start their killing spree.

Everything else echo trivializes

Yes and no.

DS is still killable. 1 unprotected DS isn't the wipe it used to be, but a few of those and you're wiping in cascade order. Plumet will still follow with a death on the tank. (and DS durring twister is still separates vet healers and tanks from new healers and tanks)

Snakes still need to be done correctly no matter the method Not just stacking. Kill one too soon, the fallen stacks will not let you make it, or if you choose burn method, 2 stacks of weakness will 1shot dive bomb people.

I don't see any part of twin that is trivialized. It makes it better for farming pts, but no way changes the win.