First, a little "answer" to the other rating (I imagine the person played this and did not DM it, and the DM did not give this info', but it is all there in the scenario):
no real reason why this part can’t be replaced or upgraded with a new design
The reason is that it can be replaced, easily... but that means changing many things, and thus a great deal more time than if they can find what they need right now (and they are in a hurry for reasons explained).
As we get to this place that is sunken, there is no real explanation as to how this place is now operational and maintained by people who should not be able to do so.
Well, it is explained by how they learn their skills (and find what they need) via the specific learning tools mentioned...
Anyhow, I ran this (five PCs, w. four playing Pre-Gens) and we had a lot of fun.
I'd say the strongest feeling I got from the players was mystery as to what is going on and what the heck is going to turn up as the "something that is wrong".
There is fun situation, the underwater problems, okay NPCs, but a very strong overall feeling and atmosphere.
I like them: I use them in a lot of my games (though I have other minis)
Having the pregens is great.
For me they deliver what I want: nice colorful images of Starfinder characters and enemies, that I can easily carry around with me.
I really like this.
The drawings are great (but not colorful enough - so 1 star off) and the cards super useful (but the writing is HARD to read, really silly choice of font and background color).
I'd give this 5 stars, but the color scheme lops two stars off, mainly because I cannot read them easily (have to squint, and put them sideways, and make sure I have light).