Going over the Variety articles and images, and no real other sources, here are some points and hypotheses I want to make:
- The four main characters are Ensigns Brad Boimler, Beckett Mariner, Rutherford, and Tendi. Rutherford doesn't have a first name in any source, but looks like a cyborg. Rutherford is an engineer and Tendi works in the medical bay (Doctor? Medical technician?).
- Mariner is holding a Bat'leth, so she might have some connection to Klingons (raised by them? just a fan?). She also rolls up her sleeve, which makes me think she might be a shuttle pilot or some kind of technical, low-rung job in the command division.
- Boimler, almost certainly a human, has been described as a stickler for the rules and wanting to be Captain. He appears to be the main character. It's probably a bit of an ensemble though. Boimler's a real last name, but kinda rare, so maybe it could be a hint at alien parentage.
- That's a weird hallway, presumably on the California-class USS Cerritos (Cerritos is a city in California), that Rutherford is standing in. It has at least six bunks, probably much more, spiraling away. The lower decks all sleep in giant barracks on the ship? We saw something similar on the USS Excelsior, but not as large. I assume these four might just share one room, and this is either a stylized depiction, or just some sleeper ship seen in an episode.
- Commander Jack Ransom, voiced by Rebecca Romijn's husband (neat), could maybe, possibly, be related to Captain Rudy Ransom of the Equinox (RIP).
- Lieutenant Shaxs is probably security, which leaves one to wonder who Rutherford's boss in engineering is. None of the Lower Deck officers are security, making me think they will do jokes on the revolving door of Shaxs' staff. Shaxs doesn't sound like a Bajoran to me. Should've ended on a vowel.
- But then again, Ransom, as XO is probably Mariner and Boimler's boss, T'ana definitely Tendi's boss, and that means Shaxs should be Rutherford's boss. If the drawing is representative of who our cast is reporting too, maybe he's just a bulky-looking, intimidating Chief Engineer. As a juxtaposition, the joke could work, although his low rank (Lt.) implies security chief.