If there had been a Stephen King Edition of the Kindle with all of his works included (at a greatly reduced price though more than the $359 Kindle price), I would have been all over it.
Otherwise, I prefer to pick and choose my content. I hate when my computers ship with software I don't want and will never use.
I'm not big on book sharing (I'm selfish that way
). The subscription model migh be something people would jump on. The auto sample download would not be useful to me for authors I really like. I use samples for new authors I'm unsure of.
I would love to see book bundles. There are some long running series books (like "In Death") where I would like to purchase 3 or 4 in a bundle at a reduced price (with some control over which books are in my bundle).