If I had a preference for both, then give me both. But, this is Star Trek. Long term consequences within the world are not always presented or consistent in their application, hence the popular notion of the reset button as applied to TNG and VOY in particular but TOS was guilty of it too. So, I would prefer character growth if I have one over the other.
Yes, prequels paint the production team in to a corner, and yes, they'll stumble over it. I am struggling to see this as an issue in terms of the overall enjoyment of the show, so I might be missing something. I mean, you could even apply this to every Batman movie. Batman is always Batman. So, where is the tension in knowing that Batman will be Batman in the next film in some way, manner or form?
I personally would rather seem them feel limited and have to work within constraints than limitless and tell ridiculous stories. But, again, I might be reading something wrong here.
I don't know, I'm always a fan of high stakes in a story, wether they are personal or not. But I mean this in "real
stakes", aka stuff
we don't know how it ends. It's IMO not "high stakes" if the outcome is already predetermined. Not just by applying real-world logic ("they would never do that"), but by the outcome already being predetermined
in-universe. As in: we already
saw the resuls in a sequel
.
As an example: A story about an exploration vessel on a single mission. That can be extremely high stakes when it's possible
the entire ship can be lost! That's the type of story drama that's also possible in prequel. If the USS Discovery get's in a serious situation (as long as Pike and Spock aren't on board) - that's high stakes!
Everything in this situation can theoretically happen - everybody dies, the ship is lost but the crew survives, the situation is solved with/without a personal sacrifice.... Some of those are unrealistic ("everybody dies"), but in-universe
that's a possibility. The stakes are real. Batman
really could have died at the end of "Dark Knight Rises".
Wheras a klingon-Federation war in a prequel setting might have a much bigger
scope. But the stakes aren't as high. We already know the outcome. This isn't "Inglorious Basterds". In the end, everything is going to be more or less neatly tied up, to reach a predetermined outcome we already know. The
highest possible stake in this scenario would be again "do
these characters survive". But if these events are tied together ("if our heroes die, the klingons will win the war"), the personal stakes become diluted once again.
Really, I like to have BOTH personal AND plot stakes in my story. If it's
only about the plot, the story becomes very unpersonal very fast, and if it's
only about the characters, I'd much rather watch a conventional drama - because that does this shit usual better than a schlocky sci-fi show. The appeal of science-fiction is having
both at the same time. That's certainly
possible to pull off in a prequel - by having "smaller" plot stakes where the outcome isn't pre-determined - but the writers really struggle with that, and a sequel simply would have avoided this issue altogether.