Thanks for weighing in on this @MisterX, @Felderburg and @Modiphius-Jim. I think this conversation helped me tease out where I was misapprehending things.
At the moment, when people create characters, they usually select a role and that role usually gets written in to the “Assignment” field of a character sheet. So, for me, it’s tempting to conflate the idea of the “role” with the idea of “assignment”. Lots of people get assigned to starships with lost of different postings: junior engineers, assistant chief medical officer, security guard, and so forth. But only special assignments constitute roles (Science Officer, Chief Engineer, etc.).
Here’s the part that’s kinda wonky. In today’s world, when creating a main character, when you get to the final screen, the character creator tries to guess what role best fits your character and pre-selects the best fit. There isn’t really a way to not select a role. That’s really the root of the problem. (And that’s an implementation detail that predates my involvement with the character creator, so I haven’t really opened that code up and looked at the assumptions behind it.)
Making things more awkward, the section on the screen that lists the “roles” has the heading “Assignment”.
For the most part, that works okay, so long as you’re creating a character whose assignment is also a role (as most of the original shows had: characters Quark and Seven of Nine were among those who didn’t quite “fit” but the Player’s Guide has given them roles). Choose a role, and that becomes your assignment. So now my issue is that cadets don’t fit that pattern. And that’s fixable, but I just need to take a moment to figure out the best way to change the way that final screen behaves. I’ve sometimes used the character creator to make major NPCs who’ve not been in those command roles (my Captain character calls for the Master-at-Arms a lot, for example, and my GM eventually insisted that the master-at-arm get a character sheet 'cause she kept showing up in scenes), and I’ve had a tickle in the back of my brain that’s always been a bit bothered by that. Now I understand that tickle a lot better.
(Aside: I’ve totally stolen a Scott Glenn line from The Hunt for Red October, and my character periodically hits her communicator and says, “Master-at-arms, please report to the Mess Hall… With. Your. Sidearm.” when we have a non-serious discipline issue. In my mind, the Master-at-arms is a senior non-comm from the security department who deals with crew – and guest – policing matters. Master-at-arms is totally an assignment, but not a role. It’s also something I’d never expect to see in the any of the books, 'cause it’s totally not canon)
One last thought: the fact that most cadets don’t have a role is one more way in which they’re less powerful than “standard” characters. I can see how some folks might eschew, say, being the only cadet in a ship assignment because of being less powerful than non-cadet characters. *shrug*
BC