Of course Quentin Tarantino's Star Trek was based on the old-timey gangster one - The A.V. Club

Specifically, the movie’s script—written by Mark L. Smith—was apparently a riff on the second-season Original Series episode “A Piece Of The Action,” a.k.a., “The One Where There’s A Gangster Planet.” Which, besides sounding like a joke—”Did you hear about Quentin Tarantino’s Star Trek movie? People stand around wearing suits and point guns at each other”—also sounds like it’d be a lot cheaper than having to film a bunch of spaceship stuff..

The same Deadline report, though, notes that a) Tarantino is apparently not directing the film, although he’d probably still produce, and b) that it’s probably going to end up in the “Maybe we do it as a spin-off further down the line” category as the Hawley project?

That only leaves the direct sequel to 2016's Star Trek Beyond in the running, which has apparently been held up because getting Chris Pine and the rest of the Abrams/Lin cast together is going to be extremely expensive