It's about time to add Coil story mode, isn't it ?

[Kuwagami]

It does. Significantly.

Echo helps for dps checks. There is none left with current ilevel (or rather, there shouldn't remain any)

Echo won't help people for dives in T5 (misplaced, group in wall, end. Or too slow, people in wall, end. You can have 2 dead at a time but that's it.)
Echo won't help people for twisters.
Heck, some groups still fail at conflags...


Echo won't help for meteor stacking
Echo won't help for messy heavensfall
Echo won't help for thunder/fire fails
Echo won't help with supernovas/thermoionic beam
Echo doesn't help that much for bahamuth's claw when the 3rd rotation begins, even though with good healers that's a lot eased.

You have a better error margin, but in T5 and T9, there are abilities which don't have any error margin, thus rendering echo useless.