I strongly disagree that Dostoevsky characters are created to be genre representatives by the way - the closest match to this kind prototypical categorization would probably be Devils (Or Demons depending on the translation) which of his works has the most political character hues - and I've read the various literary theory that pigeon hole Dostoevsky's characters in Devil's to various ideological/political positions - but in my own natural impression of the work this wasn't there and I am inclined to believe this is the author's of the related literary theory imposing what they would like to read form the work onto Dostoevsky's imagination.
It's hard to explain why exactly I think it reads so differently - but I would say my impression of the literary imagination and creative process is entirely at odds with the accounts that want to extract political or ideological positives from which these theories are built; it's not that > 'God is mandatory to ethics' is not part of Dostoevsky's thought process let's suppose it is - but I would rather suggest that the idea of agenda is foreign to his work (consider what is the agenda in for example The Idiot? -- to prove that natural goodness in people is useless and leads to insanity?) - and that rather the construction happens organically, my hypothetical recipe for imitation would be something like this: let us suppose some starting conditions and an ideological theory within a setting (suggested say by current events, or local conditions, or a real life individual) and then try to see how this character (with application of his ideological theory) develops in this setting. But this is surely a different process from starting with agenda and designing characters with the goal of convincing the public of a particular ethical or economic theory. Of course I cannot prove that Dostoevsky was not trying to convince the public of something - this is only my particular impression, but I would say two things point in favour of it - the literary merit itself - and the fact that despite the literary merit, rarely is the agenda ever clear or strongly convincing.
In contrast, a writer who I personally greatly love, C.S. Lewis, had a tendency to become overtly preachy. I'm using him as an example because he strikes me as a perfect case of someone torn between telling a good story and wanting to put out a message.
There's an interesting split in his oeuvre between books that are wonderful stories (Perelandra), and books that try to convince you to be a Christian, and his Narnia Chronicles occupy a confusing mix of the two. Many people love his stories despite his preachiness, and many people absolutely hate him for his preachiness despite the fact that he was a good writer.
Personally, I wasn't bothered by most of his overt Christian themes in Narnia, for example, because many of those themes transcend mere Christianity (budum ching). But the little tidbit about one of the core characters not going to heaven because she liked lipstick a little too much (basically) felt like a terrible violation of his storytelling just to make a point.
Anyways, I'm getting off topic here but I like any excuse to get into Lewis, as he's one of my favorite characters precisely because he strikes me as so maddeningly torn between different things. Carry on.
[1] A first-person shooter set in a zombie-infested underwater failed libertarian state led by a man named Andrew Ryan. Subtle, no? Well, the nuance comes in the form of backstory that you get while fighting the survivors. Briefly, after construction of the city was complete demand for unskilled labor tanked and unemployment exploded. Nascent genetic engineering entered the scene, the market forced desperate laborers to "splice" in order to remain competitive even though it was known to be a Faustian bargain with psychological side-effects, and the predictable tragedy of the commons ensued. The craziest, most spliced-up, "fittest" citizens survived, and those are what you fight as the game progresses. On a macroscopic level the plot begs the question "how can this be a good economic system when it can't even handle mundane declines in growth rate or overcome tragedies of the commons that everyone sees coming from a mile away?" On a microscopic level, you listen to audio journals and ask yourself "this is supposed to be freedom?" or "this is what the market considers 'value creation'?," an exercise which transfers well to real life.
You can really feel her anger burning. The whole book feels like she banged it out in one long amphetamine binge.
Many of the characters are caricatures, which, given the length of the book, I'll concede is more annoying than it is humorous. I did think Hank was solid.
Almost all of the antagonists are, as you say, ridiculously shallow, which goes to your point about her agenda. She did a shockingly better job with The Fountainhead (which I liked less) - but still far from perfect.
Finally, about the plot being obvious. That's true of most stories. It's a big book, and there were plenty of small plots and paths that I wasn't sure how they'd turn out.
Reductio ad absurdum could have been entertaining in a ~300 page package (I'm thinking Animal Farm).
Her philosophy is sound and so are her principles of free market economy, while, perhaps, her plot is idealized and naive and some characters too sophisticated to be true.)
Edit: I have tried to explain it better in a separate comment.
Hint: this is a fiction based on philosophy, not a philosophic treatise based on fiction.
Just because you are comfortable on middle-upper class doesn't mean you can't be objective about this things. That some kids are born into wealthy families and some are born in sub-Saharan Africa and forced to mine minerals for the former's iPad until they are 15 and keel over is undeniably wrong. But it's what arises from capitalism.
Equal rights for by definition inequal beings is what smart guys have tried to put into constitutions.
Rand is a relic and has largely been repudiated by far superior scholars (such as Murray N. Rothbard) who have since made most of her work deprecated.
This is a form of calling names, which the HN guidelines ask you not to do: https://news.ycombinator.com/newsguidelines.html.
Your comment would be much better with that sentence taken out.