I fundamentally disagree with how Section 31 has been handled by most writers post-DS9. It should be a conspiracy of like-minded individuals that exists parasitically within Starfleet, not an official (or an “unofficial official” agency). Starfleet already has an intelligence agency, which everyone seemingly forgets about. Section 31 is not an operation being run by them. Section 31 should be treated less like “Starfleet’s CIA”, and more like Bohemian Grove as it exists in the mind of Alex Jones. The only post-DS9 Section 31 stuff that really clicked was, surprising, the ENT subplot of Malcolm being a Section 31 asset, because it understood that it was the kind of conspiracy that embedded itself deep within Starfleet personnel and didn’t flash its ass at the universe.
This trailer does not give me confidence that the treatment of Section 31 as CIA action heroes is turning around.