Hmm, I really don't read things that way. Dune has a density of information issue to it that Amber just does not have. Zelazny provides us with a framework for learning the world. And the concepts of a royal family, political backbiting, grand castles, etc. don't really need that much explanation.

Royal power struggle. One true world. Shadow-walking. Trump cards.

Okay, got it. Done and done.

Then you introduce the individual elements within that framework as they arise.

Yeah, I really think a good writer can easily structure this to bring the audience in, in a compelling way.

The writing has to be good, though.

We will see! (Hopefully.)