I'll buy that. I think that you are headed in the right direction, at least.
A novel is a form of communication, and even if the postmodernists are right that readers "construct" their own meanings from the words that they read, a good author knows how to guide readers to grasp the intended meanings of the novel at least reasonably well.
That said, any good novel requires good characterization. That is an essential aspect of the artform. (Otherwise, you are better off writing non-fiction.) The characters are an important tool in how meaning is expressed in the novel form. So, "intent" is dependent on this, but does not sum up to this.
But I would ask the following: Is beauty important to a novel? Is "intent" enough, or is conveying your intent with artistic style required for judging a novel's degree of perfection? Imagine a novel that conveyed the author's intent very clearly, but was boring and sloppily written. Now imagine a novel that was equally good at conveying the author's intent, but was skillfully written and had characters that came to life on the page. Would the second one have a higher degree of perfection as far as novels go?
eudaimonia,
Mark