[Kamen Rider Lucha]

Quote:

Originally Posted by Klonoahedgehog

I can kind of imagine something like that combined with the triple dinosaur teamup, where the rangers they get belonged to animal teams.

I guarantee this factored into Toei and Bandai's decision making. Since there are SO MANY animal-themed Sentai teams, having that pool of teams to draw from (like Ninninger draws from past Toei Ninja Heroes) during an anniversary year is a good way to honor the history of franchise in a somewhat organic way.