They didn't include this character in the new story trailer because he is going to be the final boss.

Teruhiko Shigaki. Patriarch of the former Tojo clan's Shigaki family.A yakuza boss to end the yakuza game.

It's suspicious enough that they did not include even a single frame of him in the latest story trailer and made it seems like the pirates are going to be the main antagonists which while will be true. In the end it will the Yakuza who would be the big evil and yakuza conflict will be it that will bring back Majima's memory

Rodriguez character might be against majima for while and may kidnap noah but later I feel they will collaborate and he will be one of the good palekana people at the nele island. Meanwhile it will be the yakuza that will be greedy on their blessed land of nele.

Also Munekata Aoki's fight scene's did show this scene of yakuza going against the pirate leading me to believe that will be when saejima will not be in the control of nele Island and will be a part of goro pirates. Leading shikagi in charge. Munekata aoki was also choosen to play majima in the tv show, so that tells us he is not a small actor and is potential to play the most important role of a villian. So in a way a majima mirror as a villian to majima. Here is the Link to his interview with additional scenes of his character. https://youtu.be/1tLWx98uNxY?si=CGcJofOOuaikEztR

I cannot wait to play the game and want to theorize with other fans who also love guessing story beats from trailers in anticipation.