Finished reading through it.
I like the way you've challenged comic readers to read more books, but bear in mind, that's the same thing that some of the "literary comic icons" are doing these days too (Morrison, Moore, Gaiman. I'm not just talking about their own books either). I don't think mainstream comics do this anymore though, which pisses me off.
And I'd also like to point out that sales don't necessarily make an author a literary icon. It's how they write, not how much they write that makes them known. Stephen King will forever be acknowledged for being able to put out six or seven books in a year (or however many he puts up) mostly because his books carry similar themes and the writing style is so simplistic. In the long run (I'm talking about being immortalized in literary history) the sales don't make the icon, it's the writing. Keats was never a popular poet and critics ripped his first publication to pieces, but he's one of the most famous poets of the 19th century and probably the 2nd most acknowledged Romantic writer next to Wordsworth.
It's really hard to judge contemporary art these days mostly because we live in such an economical world. I'll also direct you to my thread about art vs. entertainment in comics, because it makes a similar argument as your approach to "literary icon"
Whether Grant Morrison and Deepak Chopra last in the long run, I have no clue. I hope Morrison does