If ten vasto lordes is enough to destroy soul society... then wouldn't half of that number be needed if they went through shinigamification. And apparently he has 4 of those already, though one is dead.
It'd be weird if a vasto lorde just pops up and join in on a fight with captains or just wtfpwns everyone.
It'd be weird if a vasto lorde just pops up and join in on a fight with captains or just wtfpwns everyone.