Who cries when sad. Deleted subplot or not, Saavik was established as a person who shows her emotions sometimes.
Yep. This is a point of continuity between STII & III: Saavik is hot-tempered for a Vulcan with a particular distaste for duplicity. It suggests they actually haven't completely reimagined her character and implies development between the two films: Saavik has been working on keeping her passions in check, and we can still see it beneath her cool Vulcan veneer at times.
It's also bizarre how David did not refute Saavik's berating. Maybe he was taken so aback.
Or it's just bad scripting.
David doesn't get defensive because he sympathizes with Saavik and feels guilty. Saavik could tell David knows
exactly what's going on with the planet. He's not surprised with the outcome, which suggests it wasn't particularly unlikely
Note how Saavik is appalled at the very mention of protomatter. Every scientist has denounced it. It is unstable, it is unethical, it is dangerous. You Do Not Use Protomatter. The implication is that the device more than likely wouldn't work and even if it somehow did you wouldn't be able to reproduce the results with any consistency. No one in their right mind would live on a planet made from protomatter.
David knew from the beginning Genesis could be used as a weapon of apocalyptic proportions - the Federation went along with it for the proposed benefits, but those benefits were essentially a fraud. David decided to put everyone's lives on the line for a complete hail mary miracle pass that he was probably still hoping to get away with or even be given another crack at it, considering Saavik has to personally confront him to get him to confess.
All of Saavik and David's colleagues have just been blown away and they themselves are being actively hunted on a planet that's about to explode (to say nothing that this may all eventually lead to a galactic war), and it's all happening because David lied to everyone about what he could deliver. No, David shouldn't be charged with murder, but I say an extremely stern talking-to is absolutely warranted.
You could say I'm making a lot of conjecture in all the above, but the way movie allows and invites such conjecture is a sign of very decent scripting, IMO.
Kruge and co. not having its secrets and ultimately never getting them ensures that the protomatter discovery wasn't found (as quickly or at all) by these other adversaries. Or they discovered it but blundered and stopped using it as a result.
Say, how DID Praxis explode, anyhow? Lol!
I thought the whole protomatter business was unnecessary character assassination against David. The planet's instabilities could have boiled down to "Genesis was supposed to be used on a big, solid planetoid that already existed, not a little starship in the middle of a nebula."
David's character arc aside, the profound moral and political implications of the Genesis device are a collective thread the movie is obligated to at least suggest a resolution to before it's over. You could say protomatter is a rather easy and contrived one, but man, we already got a multi-film saga from a Genesis device that doesn't work, you could probably base an entire separate sci-i franchise around a Genesis device that DID work!