We found that having 2 people handling the Wrath is doable, stack the raid in one spot and have the 2 Wrath handlers a few yards away, when wrath comes the person who gets it go to the Wrath handlers drop the buff and return back.
Maybe on p3 and beyond this is not viable though since the damage gets too high, probably need to add 2 more or even have the whole raid stacked and have the people with lets say 4+ stacks go out or something.