Don't think it's needed. Even in turn 5, if you're wiping, it's almost certainly due to not understanding or obeying the mechanics (dive bomb, twister, conflag, dreadknight, etc). Any party that is wiping right now that can't get it down wouldn't really be helped by the echo, because DPS requirements/healing are not the problem.

More HP/healing will not save you from twister, dive bomb will likely just wreck everyone (have to hit twice still), conflag will still just kill the person inside, etc.

The damage increase might help on conflags/dreadknights/snakes, but if you STILL are not meeting the DPS checks that exist on these even after all this echo, again, you either aren't playing properly or not understanding the mechanics; more echo won't help.