I really like the horde. It is not so over powered that it overwhelms them. However, done at the right time, it can really distract them when they are desperate and using fireworks to clear the way. It slows them down, especially for spit.
Like Jackie said, we have to be careful when using it because we can skip events. Maybe we can do like the Jackie pathing and trigger a disable and re-enable of low gravity at certain spots on the map.