How can a Sentai team be pirates??? Pirates are bad guys!
Although I guess if the "Zords" were based on sailing ships, that would be a change of pace from the usual cycle of animals, cars, and animal-cars.
And they can turn into past Sentai heroes? I.e. recycle costumes from old seasons? I guess that's the anniversary theme... but it also kind of fits the pirate theme, in the sense that they're "stealing" others' identities.
As for Samurai
, are they bringing back the old MMPR theme (which I never much liked), or is that just for the promo?