I think his idea in Crime and Punishment of there being a class of 'special' humans is pretty interesting and enduring.

Isn't Dostoevsky's idea in Crime and Punishment that there are humans who feel like they are 'special' (and thus can become monsters when they act on that belief) as opposed to the idea that a 'special' class of humans exists?

It's been a long time since I read it, but my takeaway was that he was depicting the true nature of humanity. Specifically, that people are neither fundamentally good or evil, but are fallible beings that react to their circumstances.