[Silentstorm]

I do appreciate one thing here that Gokaiger failed at, giving a good excuse as to why every former Sentai team failed to save the world and we need a new one, the Zangyack despite all the hype and worry from the Gokaigers...never really came across as more than a generic evil empire that other Sentais had already defeated.

In Zenkaiger however, they were seemingly attacked near the start of their careers, so they aren't fully powered or experienced yet and it was a sudden machine covering up their entire universe, no chance to even fight back, even the Sentai villains weren't expecting that...but those are what we see, according to the descriptions about the powers and teams that defended the worlds, i guess the Sentai teams and their villains still fought anyways but the heroes can't figure out how to take the black sky out of their universes?

Shame because it would be cool to see an alternate universe where it's revealed that the heroes and villains joined forces trying to learn about this strange phenomena and trying to dispel it.